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Neco biology answers 2022 for obj-essay questions out.
2022 NECO Biology Answers Release – See Objective & Essay Questions Here.
The Neco biology answers 2022 for objective essay questions is put. The National Examination Council (NECO) Biology SSCE will be written on Tuesday 26th July 2022.
The Neco Biology exam will comprise of Papers III & II: Objective & Essay which will commence from 10•00 am to 12•30 pm.
We are posting out NECO Biology questions for candidates that will participate in the examination for practice purposes from Neco biology answers and past questions.
NECO Biology Answers 2022 SSCE.
PAPER-II [Essay] Answer any FOUR questions. Write your answers on the answer booklet provided.
1. (a) i. What is respiration? ii. In a tabular form, state four differences between gaseous exchange and aerobic respiration. (b) i. Explain the term residual air. ii. What is the importance of residual air to mammals? (c) State four characteristic features associated with respiratory structures. (d) i. What is oxygen debt? ii. Outline three activities that can result in oxygen debt.
ANS: a) b) (i) During breathing out/expiration/exhalation; not all the air is removed from the lungs; the air left inside the lungs during breathing out is residual air. (ii) a ir is left in the lungs so that the lungs do not collapse; air is always left inside the lungs so that more oxygen can be removed (diffuse) into the bloodstream. (c) (d) i. The build-up of lactic acid; during strenuous exercise is poisonous and makes the muscles ache; oxygen is needed to break down/get rid of the lactic acid; that is why athletes continue breathing heavily even after the exercise is over; the oxygen needed to get rid of the lactic acid is known as oxygen debt. ii. Running; boxing; swimming /any correct example of strenuous activities.
2. (a) (i) What is sexual reproduction? (ii) Name four organs in mammals that produce sex hormones. (iii) Name one sex hormone produced by each of the organs named in 2(a)(i). (b) In a tabular form outline three differences between reproductions in lizards and birds. (c) (i) How are identical twins forms in humans? (ii) State three characteristic features of identical twins.
3. (a) Define the term osmosis. (b) State two ways each in which osmosis is of importance to; (i) plants; (ii) animals. (c) A normal terrestrial plant was watered daily with a hypertonic solution for about seven (7) days. It was discovered that the plant was not doing well. Explain why. (d) (i)Explain briefly how marine organisms overcome the problem of high salinity in their environment? (ii) List four examples of organisms found in the benthic zone of marine habitat.
4. (a) (i) What is conservation? (ii) State six factors responsible for the decline of the abundance and variety of wildlife. (b) Outline six ways in which the government can improve the situation in 4(a) (ii) above. (c) (i) What is Eutrophication? (ii) State two causes of eutrophication.
5. (a) What is reproduction? (b) In a tabular form, state six differences between sexual reproduction and (c) asexual reproduction. (d) State three advantages of sexual reproduction. (e) (i) Describe the female reproductive structure of a flowering plant. (ii) List two factors necessary for the germination of seeds.
6. (a) (i) What is courtship behaviour? (ii) Outline five benefits derived from the exhibition of courtship behaviour. (b) Describe briefly courtship behavior in the Agama lizard. (c) Describe briefly the mammalian placenta.
7. (a) Explain briefly the role of the skin as a sensory organ. (b) Describe briefly the vegetation of Tropical Rain Forest. (c) List five animals that inhabit the Tropical Rain Forest.
Neco Biology Objective Questions 2022.
13. A plant has flowers whose anthers mature and fall off before the stigma is fully developed. What will this prevent? A cross-pollination B insect-pollination C self-pollination D wind-pollination E air pollination.
14. Under which set of conditions will the transpiration rate of a well-watered plant be fastest? A a cool, dry, windless day B a cool, rainy, windy day C a hot, dry, windy day D a hot, rainy, windy day E a dry, dry, rainy day.
15. Which bones form a joint at the shoulder? A humerus and scapula B humerus and ulna C radius and ulna D radius and scapula E femur and collar bone.
16. A motor neuron transmits impulses from A muscle to the spinal cord B receptor to muscle C receptor to the spinal cord D spinal cord to muscle.
17. Where are most nitrogen compounds excreted from humans? A kidneys B liver C rectum D skin E bladder.
18. The cell wall of a plant cell is removed using an enzyme. What would happen if this cell is then placed in distilled water? A It would take longer for the cell to become turgid B Proteins in the cytoplasm would leave through the cell membrane C The cell would become smaller as water passes out D The cell would burst as water moves into it.
Note: There is nothing like Neco Biology Expo online. Neco Ssce candidates are to desist from patronizing online fraudsters/vendors who say they can provide such services as they are not real.
Keep following, more questions and answers will be added soon.
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NECO Biology Questions and Answers For 2022/2023 (Theory and Objectives)
Biology NECO Questions 2022. I will be showing you the NECO Biology objective and theory questions and answers for free in this post. You will also understand how NECO Biology questions are set and how to answer them.
The National Examinations Council (NECO ) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and December/January respectively.
NECO Biology Question and Answers Essay and OBJ (Expo)
The 2022 NECO Biology expo will be posted here during the NECO Biology examination. Keep checking and reloading this page for the answers.
NECO 2022 Biology Answers Loading.. .
1-10: DDEDBAEACC
11-20: DEECCBBBAB
21-30: EEADEAEAEA
31-40: BCCBCCBADE
41-50: DCCBCBECDC
51-60: EABBCCBADE
(i) Setting up of national park and gardens to save wildlife in their natural environment.
(ii) Poaching i.e. uncontrolled and illegal killing of game should be prevented.
(iii) Avoiding the use of pesticides that may kill off many animals
(vi) Prohibiting deforestation and encouraging afforestation
Sexual reproduction involves the fusion of two gametes – male and female gametes during fertilization to form a zygote which develops into a new organism. It involves organisms of the same species.
Sexual reproduction is the fusion or joining of male and female gametes or nuclei from different individual to form a zygote which later develops into an embryo or organism.
(i) biceps (flexor)
(ii) Triceps (extensor)
– When one touches a hot object, the sensory receptor in the skin receives the stimulus
– An impulse is transmitted from the receptor to the spinal cord, via the dorsal root/sensory neurone
– The intermediate neurone in the spinal cord passes on the impulse to the motor neurone
– The motor neurone then sends the impulses to an effector organ (muscle) via the ventral root
– All the neurones are linked by synapses across which impulses are sent
– The muscle upon receiving the impulse contracts causing the hand to be withdrawn from the hot object
(Pick Any Three)
(i) It provides water for photosynthesis
(ii) To get rid of excess water in the plant
(iii) It helps plants to continually draw water from the soil into their stem and leaves.
(iv) Some evaporation of water uses latent energy from plants and therefore keeps the plant cool
(v) It helps in the transport of mineral salts from soil to leaves and growing points of the plant
(i) Growing of cover crops like grasses, sweet potato which covers the surface of the soil
(ii) Contour ploughing: ploughing along the contours of a slope to reduce the speed of runoff water.
(NUMBER TWO)
Metamorphosis: This is the name given to the change in form shown by insects and amphibians from the egg stage to the adult stage.
(Pick Any Four)
(i) It regulate sex drive (libido)
(ii) It helps in the production of sperm
(iii) It helps in the production of red blood cells
(iv) It is responsible for muscle mass and strength
(v) Cause an increase in bone mass
(vi) Responsible for fat distribution
(i) It deaminates excess amino acid to urea
(ii) It stores iron from broken down cells
(iii) It detoxified poisonous substances and sent to the kidney for excretions
(iv) It supplies heat to the body by its metabolic reactions
(v) It also store fats and releases it at controlled rates into the blood when the need arises
(vi) It stores and releases minerals (iron, copper and potassium and vitamins (A, D and B12)
(i) Oxygen (only in the day)
(ii) Carbon dioxide (only at night)
(iii) Water
(iv) Tannins
(v) Alkaloids
(vi) Resins
(vii) Latex
– The semi-circular canals in the inner ear are responsible for the maintenance of balance with respect to circular motion.
– There are three semi-circular canals and each is found in one of the geometrical planes (right angle to each other)
– During spinning, the gelatinous cupula in one of the semi-circular canals is set in motion.
– This stimulates the sensory hairs, and impulses are sent through the auditory nerves to the brain for proper body posture.
– When one stops spinning, the gelatinous cupula does not stop moving instantly but continues to move for some time
– This cause the continue feeling of the sensation of spinning
(i)Buccal respiration
(ii)Lung respiration
(iii)Skin respiration
TABULATE PLEASE
=WIND POLLINATED FLOWERS=
(i) The flowers are not attractive
(ii) The pollen grains are not sticky
=INSECT POLLINATED FLOWERS=
(i) The flowers are attractive
(ii) The pollen grains are sticky
(i)Parietal placentation.
(ii) Basal placentation.
Light rays from an external object is refracted by the cornea, aqueous humour, the lens and the vitreous humour. The lens act as the fine adjustment bringing the rays to a focus on the retina. The image formed on the retina of human are inverted and diminished. The brain receives the stimulus via the optic nerves and then interprete it.
(i)Parasitic nutrition
(ii)Symbiosis
(iii)Carnivorous nutrition
(i) Internal fertilization
(ii) External fertilization
– After fertilization, the zygote divides repeatedly and develops into an embryo which consists of the plumule, radicle and one or two cotyledons.
– The primary endosperm nucleus develops into a nutritive tissue called endosperm, which stores food used by the developing embryo
– The synergids and the antipodal cells degenerate
– The ovule changes to form the seed and the interguments form the seed coat
– The micropyle remains where air and water enter the seed.
– The ovary develop into the fruit and the ovary wall forms the fruit wall called the pericarp.
– The style shrivels off, the petals, sepals and the stamens wither and fall off
(i) Red blood cells
(ii) White blood cells
(iii) Blood plasma
(iv) Platelets
(i)They are proteinous in nature
(ii) They speed up the rate of chemical reaction
(iii) They are organic catalyst
(iv) They are specific in function
Mendel’s first law also known as the law of segregation of genes states that during gamete formation, two alleles at a gene locus segregate from each other and each gamete has an equal probability of containing either allele
(5bi)
(i)Bush burning
(ii)Overcropping
(iii)Overgrazing
(i)Seasonal migration
(ii)Pairing
(iii)Territoriality
The 2022 NECO Biology answers will soon be posted, wait patiently.
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The questions below are the NECO past questions and answers that will help you in your 2021 NECO Biology Questions.
1. Plants are classified into the following classes except
(a)Bryophyte.
(b) Coelenterate.
(c) pteridophyta.
(d) thallophyta.
(e) Spermatophyte.
2. The cell wall of plants is rigid due to the presence of?
(a) Cambium
(b) cellulose
(d) chloroplast
3. The structure responsible for the transportation of mineral salt from the root to other parts of the plant is?
(a)Collenchyma
(d) sclerenchyma
4. Which of the following cell organelles traps sunlight energy in plant?
(a)Chloroplast
(b) Endoplasmic reticulum
(c) Mitochondrion
(d) Ribosome (e) Vacuole
5. The following conditions are necessary for photosynthesis except
(a) Carbon(iv)oxide.
(b) chlorophyll
(c) light energy
6. Which of the following organisms carries out photosynthesis?
(c) paramecium
(d) plasmodium
7. Which of these is an amphibian?
8. A flower with two or more fused carpels is called
(a) Apocarpous
(b) monocarpous
(c) polycarpous
(d) pistillate
(e) syncarpous
9. The response of plants to the stimulus of touch is called?
(a) Chemotropism
(b) geotropism
(c) hydrotropism
(d) phototropism
(e) thigmotropism
10. Which of the following is a bryophyte?
(a) Bladder wort
(b) Fly trap
(c) Liver wort
(d) Pitcher
11. Cellular respiration occurs in the
(a) Chloroplast
(b) endoplasmic reticulum
(c) food vacuole
(d) mitochondrion
(e) nucleus
12. In a moss plant, spores are produced in the
(a) Capsule
(c) rhizoid
13. Exoskeleton is a characteristic feature of
(b) earthworm
(d) millipede
(e) tapeworm
14. Which of the following influences growth in plants?
(a) Acetic acid
(c) Chlorophyll
(d) Ethylene
15. Land snail belongs to the phylum
(a) Annelida
(b) Arthropoda
(c) Echinodermata
(d) Mollusca
(e) nematode
16. The opening of the anthers and stigmas of a bisexual flower at the same time is called
(a) Cleistogamy
(b) dichogamy
(c) homogamy
(d) protandry
(e) protogyny
17. The following are the effect of auxins on plant except in
(a) Flowering
(b) fruiting without fertilization
(c) ripening of fruits
(d) root formation
(e) stem elongation
Use the diagram below to answer questions 18 and 19.
18. The diagram represents the internal structure of a
19. The part labeled I is the
(b) endodermis
(c) phloem (d) root hair (e) xylem
20. Which of these is a water soluble vitamin?
(a) A
21. The following diseases are airborne except
(a) Clolera
(b) measles
(c) meningitis
(d) pneumonia
(e) small pox.
22. The excretory organ of insects is called
(a) Contractile vacuole
(b) flame cell
(d) malphighian tubule
(e) nephridium
23. Which of these animals undergo metamorphosis
24. Villi are finger-like structures found in the
(a) Large intestine
(c) small intestine
(d) stomach
(e) tongue.
25. In mammals, sperms are formed in the
(a) Cowper’s gland
(b) scrotal sac.
(c) seminal vesicle
(d) seminiferous tubules
(e) vas deferens
26. Which of the following is not a part of the mammalian brain?
(a) Cerebellum
(b) cerebrum
(c) Olfactory lobe
(d) spinal cord
(e) Thalamus
27. In plant, Chlorosis is caused by the deficiency of
(b) magnesium
(c) nitrogen
(d) potassium
(e) Sulphur
28. Which of the following diseases is not sexually transmitted
(b) Hepatitis
(d) influenza
(e) Syphilis
29. Which of the following is not a caste in a termitarium.
(d) soldiers
(e) workers
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30. The structure responsible for excretion in tape worm is called
(a) Cell membrane
(b) contractile vacuole
(c) flame cell
(d) malphigian tubule
31. The mode of nutrition of mushroom is
(a) autotrophic
(b) epiphytic
(c) parasitic
(d) saprophytic
(e) symbiotic
32. The earthworm is an example of
(b) Coelenterata
(c) Mollusca
(d) nematoda
(e) Platyhelminthes
33. Fat and oil are also known as
(b) fatty acids
(c) glycerol
(e) carbohydrates
34. Gaseous exchange in the lungs occurs at the
(a) Alveolus
(b)bronchus
(c)bronchiole
(e) trachea
35. The following are pigment except
(c) chromatophores
(d) haemoglobin
(e) melanin
Use the diagram below to answer questions 36 – 38.
36. The type of placentation shown above is found in
(a) cana lily
(d) pride of Barbados
(e) sunflower
37. the part labeled x is the
(c) placenta
38. the type of placentation represented in the diagram is
(c) free central
(d) marginal
(e) parietal
39. the growth that occurs at the tip of shoot and root is called
(a) allometric
(c) isometric
(d) primary
(e) secondary
40. carnassial teeth are found in
41. Which of the following bones is not a part of axial skeleton?
(a) Backbone
(e) Sternum
Use the diagram below to answer questions 42 and 43
42. The part labeled ii is the
(b) hyaline cartilage
(c) ligament
(d) synovial cavity
(e) synovial membrane
43. The function of the part labeled iii is to
(a) Soften the bones
(b) join bones together
(c) lubricate joints
(d) protect bones from wearing
(e) reduce friction at joints
44. The part that supplies food and oxygen to the eye is
(a) Choroids
45. The part of the male reproductive system that stores sperm is
(b) epididymis
(c) prostate gland
(d) seminal vesicle
(e) vas deferens.
46. An organ in bird that grinds its food is
(c) gizzard
47. Which of the following animals exhibit basking
48. The following are functions of the sympathetic nervous system except
(a) Dilation of pupil of eye.
(b) inhibition of saliva secretion
(c) reduction of blood pressure
(d) reduction of urine output
(e) stimulation of ejaculation
49. The following homeostatic mechanisms are carried out by mammals except
(a) Excretion
(b) osmoregulation
(c) pH regulation
(d) reproduction
(e) thermoregulation
50. Part of the brain that controls blood pressure is called
(c) corpus callosum
(d) medulla oblongata
(e) pons varolii
51. Haemorrhage is caused due to the deficiency of vitamin
52. The control method of pests using predators is called
(a) Biological
(b) chemical
(c) cultural
(d) mechanical
(e) physical
53. The following are vectors except
(a) Black fly
(b) butterfly
(c) housefly
(d) mosquito
(e) tsetse fly
54. The deficiency of proteins in a developing child result in
(a) Beri beri
(b) kwashiorkor
(c) night blindness
(d) rickets
55. The theory of “use and disuse” of body parts was propounded by
(a) Carl Linneaus
(b) Charles Darwin
(c) Gregor Mendel
(d) Jean Lamarck
(e) Robert Hooke
56. The knowledge of heredity and variation are not required in
(a) Blood transfusion
(b) crime detection
(c) determination of paternity
(d) longevity
(e) marriage
57. Which of these is not a pollutant
(a) Carbon dioxide
(b) Lead oxide
(c) Nitrogen gas
(d) Nitrogen oxide
(e) sulphur dioxide
58. The topmost layer of a typical soil profile is
(b) coarse sand
(c) fine sand
59. Plants that survive in marine habitats are called
(a) Halophytes
(b) hydrophytes
(c) mesophytes
(d) saprophytes
(e) xerophytes
60. The felling of trees in a forest is called
(a) Afforestation
(b) deforestation
(c) desertification
(d) forest pruning
(e) re-afforestation
Answer any three questions only
1a. State one role each of the following in photosynthesis
(i) Sunlight
(ii) Chlorophyll
b. List five types of bones found in the forearm of man
c. Mention three functions of a worker caste in termitarium
d. Define ecosystem
e. Draw a well labelled diagram (8-10cm long) of the nephron
2a. Define the following
(ii) Implantation
(iii) Species
(iv) Saprophytes
b (i) State four functions of the mammalian skeleton
(ii) Mention two muscles that bring about movement of a forearm
(iii) Name three digestive enzymes found in the small intestine and state one function of each
3a. (i) Mention three diseases of the liver
(ii) In a tabular form, state five differences between plant and animal cells
b. Using annotated diagrams only, illustrate the carbon cycle.
c. (i) List two types of supporting tissues in plant
(ii) Give two characteristics of a reptile
4a. Define the following terms
(i) Diffusion
(ii) Osmosis
(iii) plasmolysis
b (i) State four effects of overcrowding
(ii) mention two ways of conserving wildlife.
(iii) Give two examples of social animals
c (i) Define metamorphosis
(ii) List two examples of insects that undergo incomplete metamorphosis
(iii) Give two examples of a berry fruit
5a. (i) Draw a well labelled diagram (8-10cm long) of the human alimentary canal
(ii) Complete the table below
b. T T and t t are monohybrid plants representing tallness and shortness respectively
- By means of crossing, show the F1 generation
- Using punnet square method, show the F2 generation
- Give the phenotypic ratio of the F1 and F2 generations shown above
That’s all about NECO Biology Questions and Answers for 2022 (Theory and Objectives). If you have any questions, kindly drop your question in the comment box.
Last Updated on July 26, 2022 by Admin
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Neco biology answers 2021.
Here is the neco biology answers for 2021, enjoy and share.
Biology-OBJ!
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THEORY (1a) (i) To search for food. (ii) Escape predators. (iii) Find mates for reproduction. (iv) To disperse/reduce competition/overcrowding by moving to new locations.
(1bi) Phloem: Responsible for the transportation of enzymes/hormones.
(1bii) Leaf: is used for photosynthesis
(1biii) Xylem; is to transport water from roots to stems and leave
(1biv) Flower; is for reproduction in plant
(1ci) (i)Low water requirements (ii)No leaves or small number of leaves (iii)Possession of thorn or needles
(1cii) (i)it provides new cells for growth (ii)for replacement of worn-out cells
(1di) An image is formed on the retina with light rays converging most at the cornea and upon entering and exiting the lens. Rays from the top and bottom of the object are traced and produce an inverted real image on the retina. The distance to the object is drawn smaller than scale.
(1dii) (i)Evidences from Palaeontology (ii)Evidences from Comparative Morphology (iii)Evidences from taxonomy ====================================
(2a) (i)Eye lids (ii)Conjunctiva
(2bi) Excretion is the removal of waste products of metabolism which are harmful or would in time interfere with the normal functions of the organisms
(2bii) Competition is an interaction between a number of the organisms of the same or different species for resources in limited supply such as food, water , space and light
(2biii) Deforestation is the extensive cutting down of trees for the purpose of either farming it firewood or mining thereby exposing the top soil to agents of erosion
(2d) (i)Refrigeration (ii)Canning (iii)Dehydration or drying of foods (iv)Pasteurization ====================================
(3a) (i) Meiosis : four daughter cells (ii) Mitosis: two identical daughter cells
(3bi) (i)It reduces the risk of diseases from parents to offsprings (ii)It create diversity and variation among populations
(3bii) The relationship is known as commensalism in which the remora fish gains while he shark neither gain nor loose. In this case, the remora fish attach itself to the shark which transport it round the water protecting it form predators and it also obtain it’s food through the process. The shark on the other hand neither gain or loose.
(3ci) (i)High fever (ii)Sore throat (iii)dry cough
(3cii) It carries filtered blood from the kidney’s to the posterior vena cava
(3di) Ecological niche: This is the exact position by an organism in a particular habitat
(3dii) Population density: This can be defined as the total number of organism per unit area of the habitat
(3diii) Climax community: This is established when a stable or unchanging community is attained, thus the community is in equilibrium with the environment ====================================
(4ai) Aestivation is the mode of arrangement of sepals or petals in the floral bud with respect to the other members of the same whorl.
(4aii) (i)Nose for smelling (ii)Eyes for seeing (iii)Tongue for tasting (iv)Ear for hearing
(4aiii) When a person spin around rapidly, that liquid in the inner ear spins as well. When the person stops spinning the liquid keeps moving for a bit, confusing your brain into thinking that the person is still spinning even when the person is standing still and that causes the feeling dizziness after spinning around the stationary object.
(4bi) Neuron; transmit information to other nerve cells, muscle, or gland cells.
(4bii) cerebrum; initiates and coordinates movement and regulates temperature
(4biii) Mendulla Oblongata; passes messages between your spinal cord and brain.
(4biv) cerebellum; coordinates voluntary movements
(4ci) Tabulate; (i)tropic the effect is more or less permanent while Nastic movements are temporary and reversible.
(ii)Stimuli for the tropic movements are unidirectional and never diffuse while The stimuli for the Nastic movements may be unidirection or diffuse.
(iii)Movement in tropic movements is directional while Nastic movements is non directional
(4cii) (i)Contains chlorophyll Absorbs light
(ii)Stomata Allows carbon dioxide to move by diffusion into the leaf
(iii)Guard cells To open and close the stomata depending on the conditions
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NECO Biology 2021 Answers
NECO Biology 2021 Answers, neco Biology 2021, Neco Biology Answers 2021. neco 2021 Biology obj, 2021 neco Biology obj and Theory Answers, neco Biology 2021, Many NECO candidates find it difficult to answer the NECO 2021 Biology obj and theory question and Answers correctly due to not understanding the questions. I will show you the best way to answer NECO Biology Obj and Theory questions and make a good NECO result in your Biology examination.
NECO Biology Questions and Answers 2021. Objective and theory answers (Expo), for the National examination council (June/July 2021. NECO Biology Objective and Theory Answers. This post will provide you with repeated questions as well as the answers to your NECO Biology Biology exam. This post will help you understand the NECO Biology objectives and answers.
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Objective & Essay – Biology – 10:00am-1:00pm
BIOLOGY OBJ: 1-10: ECCECDBBBD 11-20: BCAEBECEEB 21-30: EECDCDCECE 31-40: ADBDCCCCBA 41-50: CDDDEADCEA 51-60: EBDADACBBB
NOTE: YOUR ARE TO ANSWER THREE(3) QUESTIONS ONLY. ———COMPLETED———
(1a) Animals move from one place to another -In search of food. -In search of mates -In search of shelter -To escape from enemies or predators
(1b) (i)Phloem conducts food substances downward to other tissue in the root of plants. (ii)Leaf helps plants to transpire and undergo photosynthesis (iii)Xylem transports water and dissolved mineral salts upwards through the vascular bundle. (iv)The primary function of a flower is for reproduction
(1ci) -Small or no leaves to prevent evaporation -Thorns for protection against animals seeking stored water -Ability to absorb water whenever available
(1cii) -It ensures that the diploid condition of the cell is retained from generation to generation. -As cells undergo mitotic division, growth occurs.
(1di) Light rays from an object enter the eye through the cornea. The light rays are refracted by the convex cornea and passed through the aqueous humour which further bends the light rays before entering the lens through the pupil. The lens further bends the light rays and focuses them on the retina. The light rays are converted into electrical impulse, which are sent through the optic nerve to the optic lobes of the brain where they are correctly interpreted.
(1dii) -Evidence from comparative anatomy. -Evidence from vestigial organs -Evidence from fosils
==================================
(2a) (Pick any two) (i) The sclera or sclerotic layer (ii) Cornea (iii) Choroid or Middle layer (iv) Conjuctiva
(2bi) Excretion: Excretion is simply defined as the elimination of waste products of metabolism from the body of an organism. In order word ,excretion is also defined as the process by which waste products of metabolism are removed from the body of living thing.
(2bii) Competition: competition is defined as the interaction between members of the same population or species ,occupying the same trophic level, to obtain mutually needed resources that are short in supply in their environment.
(2biii) Deforestation: Deforestation is the permanent removal of a forest or stand of trees from land which is then converted to a non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use.
(2d) (pick Any four) (i)Salting (ii)pickling (iii)smoking (iv)canning (v)Bottling (vi)Pasteurization (vii)sterilization
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NECO Biology 2022 Answers Objective and Essay | Get Now
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NECO Biology 2022 Answers Objective and Essay
(5ai) Courtship behavior in Agama Lizard (i) A sexually active male lizard is large, brightly coloured/with an orange/blue head (ii) female lizard is smaller and less colourful/brown with green markings (iii) dominant male lizard defends its territory (iv) by driving away/fighting off/lashing other males with its tail (v) male displays its full colours in front of female (vi) female responds by arching her back and lifting her tail vertically (vii) male tries to catch her (viii) female usually runs a
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BIOLOGY OBJECTIVE
OBJ- 01-10: ECCECDB
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NECO Biology Answers OBJ & Essay For 5th August 2021 Complete Answer - Education - Nairaland
2023 NECO BIOLOGY ANSWERS: Verified NECO EXAM Biology Expo Runs - V
Obj & notice section, 2023 neco biology password/pin/code is 8459. you can use it to view biology answers a day before the exam..
BIOLOGY - OBJ-
01-10: ECCECDBBBD
11-20: BCAEBECEEB
21-30: EECDCDDEBE
31-40: ADBECECCBA
41-50: CDDDEAACEA
51-60: EADADACBBB
Completed.!!!
============================
ESSAY-ANSWERS
INSTRUCTIONS:
ANSWER FOUR(3) QUESTIONS IN ALL.
(5ai)
Courtship behavior in Agama Lizard
(i) A sexually active male lizard is large, brightly coloured/with an orange/blue head
(ii) female lizard is smaller and less colourful/brown with green markings
(iii) dominant male lizard defends its territory
(iv) by driving away/fighting off/lashing other males with its tail
(v) male displays its full colours in front of female
(vi) female responds by arching her back and lifting her tail vertically
(vii) male tries to catch her
(viii) female usually runs away
(ix) when caught mating may take place.
Aestivation is the mode of arrangement of sepals or petals in the floral bud with respect to the other members of the same whorl.
(i)Nose for smelling
(ii)Eyes for seeing
(iii)Tongue for tasting
(iv)Ear for hearing
When a person spin around rapidly, that liquid in the inner ear spins as well. When the person stops spinning the liquid keeps moving for a bit, confusing your brain into thinking that the person is still spinning even when the person is standing still and that causes the feeling dizziness after spinning around the stationary object.
Neuron; transmit information to other nerve cells, muscle, or gland cells.
cerebrum; initiates and coordinates movement and regulates temperature
Mendulla Oblongata; passes messages between your spinal cord and brain.
cerebellum; coordinates voluntary movements
(i)tropic the effect is more or less permanent while Nastic movements are temporary and reversible.
(ii)Stimuli for the tropic movements are unidirectional and never diffuse while The stimuli for the Nastic movements may be unidirection or diffuse.
(iii)Movement in tropic movements is directional while Nastic movements is non directional
(i)Contains chlorophyll Absorbs light
(ii)Stomata Allows carbon dioxide to move by diffusion into the leaf
(iii)Guard cells To open and close the stomata depending on the conditions
(i) To search for food.
(ii) Escape predators.
(iii) Find mates for reproduction.
(iv) To disperse/reduce competition/overcrowding by moving to new locations.
Phloem: Responsible for the transportation of enzymes/hormones.
Leaf: is used for photosynthesis
Xylem; is to transport water from roots to stems and leave
Flower; is for reproduction in plant
(i)Low water requirements
(ii)No leaves or small number of leaves
(iii)Possession of thorn or needles
(i)it provides new cells for growth
(ii)for replacement of worn-out cells
An image is formed on the retina with light rays converging most at the cornea and upon entering and exiting the lens. Rays from the top and bottom of the object are traced and produce an inverted real image on the retina. The distance to the object is drawn smaller than scale.
(i)Evidences from Palaeontology
(ii)Evidences from Comparative Morphology
(iii)Evidences from taxonomy
-[Pick any two]-
(ii) eyelashes
(iii) eyelids
(iv) conjunctiva
(v) lacrimal glands
(i) Excretion is a process in which metabolic waste is eliminated from an organism.
(ii) Competition is an interaction between organisms or species in which both the organisms or species are harmed.
(iii) Deforestation refers to the decrease in forest areas across the world that are lost for other uses such as agricultural croplands, urbanization, or mining activities.
Competition is defined as the process by which living organisms in a habitat struggle or compete with one another for such limited essential needs in the environment. e.g. food, light, nutrients etc.
(2biii)
Deforestation is the continuous removal of forest stands (trees) either by bush burning or indiscriminate felling without replacing them
(i) Freezing
(ii) Boiling
(iii) Dehydration.
(iv) Canning.
(v) Salting
(vi) Sweetening
==========================
(i) Meiosis : four daughter cells
(ii) Mitosis: two identical daughter cells
(i)It reduces the risk of diseases from parents to offsprings
(ii)It create diversity and variation among populations
The relationship is known as commensalism in which the remora fish gains while he shark neither gain nor loose. In this case, the remora fish attach itself to the shark which transport it round the water protecting it form predators and it also obtain it's food through the process. The shark on the other hand neither gain or loose.
(i)High fever
(ii)Sore throat
(iii)dry cough
It carries filtered blood from the kidney's to the posterior vena cava
Ecological niche: This is the exact position by an organism in a particular habitat
Population density: This can be defined as the total number of organism per unit area of the habitat
Climax community: This is established when a stable or unchanging community is attained, thus the community is in equilibrium with the environment
We provide 2023 NECO Biology Questions and Answers on Essay, Theory, OBJ midnight before the exam, this is verified & correct NECO Bio Expo. NECO Biology Questions and Answers 2023. NECO Bio Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, . 2023 NECO EXAM Biology Questions and Answers
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Here is the neco biology answers for 2021, enjoy and share. Biology-OBJ! 1ECCECEBBBD 11BCAEBDCEEB 21EECDADCBAE. 31DDBECCCCBA 41ADDEEADDEA 51EEDADACBBB. THEORY
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