NECO Biology Questions and Answers For 2022/2023 (Theory and Objectives)

NECO Biology Questions and Answers 2022. I will be showing you NECO Biology objective and theory questions for free. You will also understand how NECO Physics questions are set and many more examination details.

NECO Biology Questions and Answers For 2022/2023 (Theory and Objectives)

The National Examinations Council (NECO) is an examination body in Nigeria that directs and conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and December/January individually.

NECO Biology Question and Answers Essay and OBJ (Expo)

The 2022 NECO Biology expo will be posted here during the NECO Biology examination. Continue checking and reloading this page for the answer.

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Today’s NECO Biology OBJ Answers: The 2022 NECO Biology answers will soon be posted, wait patiently.









(I) To look for food.

(ii) Escape hunters.

(iii) Find mates for proliferation.

(iv) To scatter/lessen rivalry/stuffing by moving to new areas.


Phloem: Responsible for the transportation of compounds/chemicals.


Leaf: is utilized for photosynthesis


Xylem; is to move water from roots to stems and leave


Blossom; is for proliferation in plant


(i)Low water necessities

(ii)No leaves or modest number of leaves

(iii)Possession of thistle or needles


(i)it gives new cells to development

(ii)for substitution of broken down cells


A picture is shaped on the retina with light beams uniting most at the cornea and after entering and leaving the focal point. Beams from the top and lower part of the article are followed and produce a rearranged genuine picture on the retina. The distance to the item is drawn more modest than scale.


(i)Evidences from Paleontology

(ii)Evidences from Comparative Morphology

(iii)Evidences from scientific categorization



(i)Eye covers



Discharge is the expulsion of side-effects of digestion which are hurtful or would in time obstruct the ordinary elements of the creatures


Contest is a cooperation between some of the life forms of something similar or various species for assets in restricted supply like food, water , space and light


Deforestation is the broad chopping down of trees with the end goal of either cultivating it kindling or mining in this manner uncovering the top soil to specialists of disintegration





(iii)Dehydration or drying of food sources




(I) Meiosis : four girl cells

(ii) Mitosis: two indistinguishable girl cells


(i)It lessens the gamble of infections from guardians to offsprings

(ii)It make variety and variety among populaces


The relationship is known as commensalism in which the remora fish gains while he shark neither increase nor free. For this situation, the remora fish join itself to the shark which transport it round the water safeguarding it structure hunters and it likewise acquire it’s food through the interaction. The shark then again neither increase or free.

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(i)High fever

(ii)Sore throat

(iii)dry hack


It conveys sifted blood from the kidney’s to the back vena cava


Biological specialty: This is the specific situation by a life form in a specific natural surroundings


Populace thickness: This can be characterized as the complete number of living being per unit region of the living space


Peak people group: This is laid out when a steady or constant local area is accomplished, consequently the local area is in harmony with the climate



Aestivation is the method of course of action of sepals or petals in the botanical bud concerning different individuals from a similar whorl.


(i)Nose for smelling

(ii)Eyes for seeing

(iii)Tongue for tasting

(iv)Ear for hearing


Whenever an individual twirl around quickly, that fluid in the internal ear turns too. Whenever the individual quits turning the fluid just a little, confounding your cerebrum into imagining that the individual is as yet turning in any event, when the individual is stopping and that causes the inclination unsteadiness subsequent to twirling around the fixed article.


Neuron; communicate data to other nerve cells, muscle, or organ cells.


frontal cortex; starts and arranges development and manages temperature


Mendulla Oblongata; passes messages between your spinal line and mind.


cerebellum; facilitates intentional developments



(i)tropic the impact is pretty much long-lasting while Nastic developments are transitory and reversible.

(ii)Stimuli for the jungle developments are unidirectional and never diffuse while The upgrades for the Nastic developments might be unidirection or diffuse.

(iii)Movement in jungle developments is directional while Nastic developments is non directional


(i)Contains chlorophyll Absorbs light

(ii)Stomata Allows carbon dioxide to move by dissemination into the leaf

(iii)Guard cells To open and close the stomata relying upon the circumstances

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The inquiries beneath are the NECO past inquiries and answers that will help you in your 2021 NECO Biology Questions.

1. Plants are grouped into the accompanying classes aside from


(b) Coelenterate.

(c) pteridophyta.

(d) thallophyta.

(e) Spermatophyte.

2. The cell mass of plants is inflexible because of the presence of?

(a) Cambium

(b) cellulose

(c) cortex

(d) chloroplast

(e) phloem

3. The design liable for the transportation of mineral salt from the root to different pieces of the plant is?


(b) phloem

(c) essence

(d) sclerenchyma

(e) xylem.

4. Which of the accompanying cell organelles traps daylight energy in plant?


(b) Endoplasmic reticulum

(c) Mitochondrion

(d) Ribosome (e) Vacuole

5. The accompanying circumstances are essential for photosynthesis aside from

(a) Carbon(iv)oxide.

(b) chlorophyll

(c) light energy

(d) oxygen

(e) water

6. Which of the accompanying living beings does photosynthesis?

(a) Amoeba


(c) paramecium

(d) plasmodium

(e) Volvox

7. Which of these is a land and water proficient?

(a) Fish

(b) Lizard

(c) Rat

(d) Snake

(e) Toad

8. A blossom with at least two intertwined carpels is called

(a) Apocarpous

(b) monocarpous

(c) polycarpous

(d) pistillate

(e) syncarpous

9. The reaction of plants to the upgrade of touch is called?

(a) Chemotropism

(b) geotropism

(c) hydrotropism

(d) phototropism

(e) thigmotropism

10. Which of coming up next is a bryophyte?

(a) Bladder wort

(b) Fly snare

(c) Liver wort

(d) Pitcher

(e) Sundew

11. Cell breath happens in the

(a) Chloroplast

(b) endoplasmic reticulum

(c) food vacuole

(d) mitochondrion

(e) core

12. In a greenery plant, spores are created in the

(a) Capsule

(b) leaf

(c) rhizoid

(d) seta

(e) tail

13. Exoskeleton is a trademark element of

(a) Amoeba

(b) night crawler

(c) hydra

(d) millipede

(e) tapeworm

14. Which of the accompanying impacts development in plants?

(a) Acetic corrosive

(b) Auxins

(c) Chlorophyll

(d) Ethylene

(e) Latex

15. Land snail has a place with the phylum

(a) Annelida

(b) Arthropoda

(c) Echinodermata

(d) Mollusca

(e) nematode

16. The launch of the anthers and marks of shame of a sexually unbiased blossom simultaneously is called

(a) Cleistogamy

(b) dichogamy

(c) homogamy

(d) protandry

(e) protogyny

17. Coming up next are the impact of auxins on plant besides in

(a) Flowering

(b) fruiting without preparation

(c) maturing of natural products

(d) root development

(e) stem lengthening

2020 neco science questions and replies
Utilize the chart underneath to respond to questions 18 and 19.

18. The outline addresses the inner construction of a

(a) Flower

(b) natural product

(c) leaf

(d) root

(e) stem

19. The part named I is the

(a) Cortex

(b) endodermis

(c) phloem (d) root hair (e) xylem

20. Which of these is a water solvent nutrient?

(a) A

(b) C

(c) D

(d) E

(e) K

21. The accompanying illnesses are airborne aside from

(a) Clolera

(b) measles

(c) meningitis

(d) pneumonia

(e) little pox.

22. The excretory organ of bugs is called

(a) Contractile vacuole

(b) fire cell

(c) kidney

(d) malphighian tubule

(e) nephridium

23. Which of these creatures go through transformation

(a) Fish

(b) fowl

(c) reptile

(d) Rat

(e) Toad

24. Villi are finger-like designs viewed as in the

(a) Large digestive system

(b) rectum

(c) small digestive system

(d) stomach

(e) tongue.

25. In well evolved creatures, sperms are shaped in the

(a) Cowper’s organ

(b) scrotal sac.

(c) original vesicle

(d) seminiferous tubules

(e) vas deferens

26. Which of coming up next isn’t a piece of the mammalian mind?

(a) Cerebellum

(b) frontal cortex

(c) Olfactory flap

(d) spinal string

(e) Thalamus

27. In plant, Chlorosis is brought about by the lack of

(a) Iron

(b) magnesium

(c) nitrogen

(d) potassium

(e) Sulfur

28. Which of the accompanying illnesses isn’t physically sent

(a) AIDS

(b) Hepatitis

(c) Herpes

(d) flu

(e) Syphilis

29. Which of coming up next isn’t a position in a termitarium.

(a) Drones

(b) lord

(c) Queen

(d) warriors

(e) laborers


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30. The construction answerable for discharge in tape worm is called

(a) Cell layer

(b) contractile vacuole

(c) fire cell

(d) malphigian tubule

(e) nephridium

31. The method of nourishment of mushroom is

(a) autotrophic

(b) epiphytic

(c) parasitic

(d) saprophytic

(e) advantageous

32. The worm is an illustration of

(a) Annelida

(b) Coelenterata

(c) Mollusca

(d) nematoda

(e) Platyhelminthes

33. Fat and oil are otherwise called

(a) Amino

(b) unsaturated fats

(c) glycerol

(d) lipids

(e) sugars

34. Vaporous trade in the lungs happens at the

(a) Alveolus



(d) larynx

(e) windpipe

35. Coming up next are shade with the exception of

(a) Auxin

(b) chlorophyll

(c) chromatophores

(d) hemoglobin

(e) melanin

neco science questions and replies
Utilize the graph underneath to address questions 36 – 38.

36. The kind of placentation displayed above is viewed as in

(a) cana lily

(b) orange

(c) pawpaw

(d) pride of Barbados

(e) sunflower

37. the part named x is the

(a) ovule

(b) petal

(c) placenta

(d) sepal

(e) stamen

38. the sort of placentation addressed in the outline is

(a) axile

(b) basal

(c) free focal

(d) peripheral

(e) parietal

39. the development that happens at the tip of shoot and root is called

(a) allometric

(b) apical

(c) isometric

(d) essential

(e) optional

40. carnassial teeth are seen as in

(a) canine

(b) cow


(d) man

(e) sheep

41. Which of the accompanying bones isn’t a piece of hub skeleton?

(a) Backbone

(b) Limbs


(d) Skull

(e) Sternum

Utilize the chart underneath to respond to questions 42 and 43

2020 neco science questions and replies
42. The part marked ii is the

(a) Bone

(b) hyaline ligament

(c) tendon

(d) synovial pit

(e) synovial film

43. The capacity of the part marked iii is to

(a) Soften the bones

(b) consolidate bones

(c) grease up joints

(d) safeguard bones from wearing

(e) diminish grinding at joints

44. The part that provisions food and oxygen to the eye is

(a) Choroids

(b) cornea

(c) focal point

(d) understudy

(e) retina

45. The piece of the male conceptive framework that stores sperm is

(a) Cowper’s organ

(b) epididymis

(c) prostate organ

(d) fundamental vesicle

(e) vas deferens.

46. An organ in bird that crushes its food is

(a) Caecum

(b) crop

(c) gizzard

(d) kidney

(e) liver

47. Which of the accompanying creatures show lounging

(a) Cat

(b) Cow

(c) Duck

(d) Eagle

(e) Lizard

48. Coming up next are elements of the thoughtful sensory system aside from

(a) Dilation of understudy of eye.

(b) restraint of salivation discharge

(c) decrease of circulatory strain

(d) decrease of pee yield

(e) excitement of discharge

49. The accompanying homeostatic instruments are completed by warm blooded animals aside from

(a) Excretion

(b) osmoregulation

(c) pH guideline

(d) proliferation

(e) thermoregulation

50. Part of the cerebrum that controls pulse is called

(a) Cerebellum

(b) frontal cortex

(c) corpus callosum

(d) medulla oblongata

(e) pons varolii

51. Drain is caused because of the lack of nutrient

(a) A

(b) C

(c) D

(d) E

(e) K

52. The control technique for bugs utilizing hunters is called

(a) Biological

(b) substance

(c) social

(d) mechanical

(e) physical

53. Coming up next are vectors with the exception of

(a) Black fly

(b) butterfly

(c) housefly

(d) mosquito

(e) tsetse fly

54. The lack of proteins in a creating kid result in

(a) beri

(b) kwashiorkor

(c) night visual impairment

(d) rickets

(e) scurvy

55. The hypothesis of “utilization and neglect” of body parts was propounded by

(a) Carl Linneaus

(b) Charles Darwin

(c) Gregor Mendel

(d) Jean Lamarck

(e) Robert Hooke

56. The information on heredity and variety are not needed in

(a) Blood bonding

(b) wrongdoing discovery

(c) assurance of paternity

(d) life span

(e) marriage

57. Which of these isn’t a toxin

(a) Carbon dioxide

(b) Lead oxide

(c) Nitrogen gas

(d) Nitrogen oxide

(e) sulfur dioxide

58. The highest layer of a common soil profile is

(a) Clay

(b) coarse sand

(c) fine sand

(d) rock

(e) humus

59. Plants that get by in marine living spaces are called

(a) Halophytes

(b) hydrophytes

(c) mesophytes

(d) saprophytes

(e) xerophytes

60. The felling of trees in a woods is called

(a) Afforestation

(b) deforestation

(c) desertification

(d) woodland pruning

(e) re-afforestation



Answer any three inquiries as it were

1a. State one job every one of the accompanying in photosynthesis

(I) Sunlight

(ii) Chlorophyll

b. List five kinds of bones found in the lower arm of man

c. Notice three elements of a laborer station in termitarium

d. Characterize environment

e. Draw a very much marked chart (8-10cm long) of the nephron

2a. Characterize the accompanying

(I) Gene

(ii) Implantation

(iii) Species

(iv) Saprophytes

b (I) State four elements of the mammalian skeleton

(ii) Mention two muscles that achieve development of a lower arm

(iii) Name three stomach related proteins found in the small digestive tract and state one capacity of each

3a. (I) Mention three infections of the liver

(ii) In a plain structure, state five contrasts among plant and creature cells

b. Utilizing explained outlines just, represent the carbon cycle.

c. (I) List two sorts of supporting tissues in plant

(ii) Give two attributes of a reptile

4a. Characterize the accompanying terms

(I) Diffusion

(ii) Osmosis

(iii) plasmolysis

b (I) State four impacts of congestion

(ii) notice two different ways of preserving natural life.

(iii) Give two instances of social creatures

c (I) Define transformation

(ii) List two instances of bugs that go through deficient transformation

(iii) Give two instances of a berry natural product

5a. (I) Draw an all around named chart (8-10cm long) of the human wholesome trench

(ii) Complete the table beneath

Part of digestive system Enzymes present
1 Mouth
2 Renin
3 Small intestine

b. T T and tt are monohybrid plants addressing stature and brevity individually

Through crossing, show the F1 age
Utilizing punnet square technique, show the F2 age
Give the phenotypic proportion of the F1 and F2 ages displayed previously
That is about NECO Biology Questions and Answers for 2022 (Theory and Objectives). Assuming you have any inquiries, compassionately drop your inquiry in the remark box.

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