Jamb 2021 Biology Likely Questions With Answers Options

The hormone which regulates the amount of glucose in the blood us called?

A

Adrenalin

B

Auxin

C

Insulin

D

Thyroxine

 

Answer

 

2

Deamination occurs in the?

 

A

Kidney

B

Pancreas

C

Spleen

D

Liver

 

Answer

 

3

In an agricultural ecosystem, the biotic component consist of

A

crops, pests and beneficial insects

B

crops, temperature and humidity

C

pests, beneficial insects and water

D

crops, water and soil

 

Answer

 

4

Epiphytes growing on the branches of trees provide an example of the relationship known as?

A

parasitism

B

commensalism

C

saprophytism

D

holophytism

 

Answer

 

 

5

The hypha of rhizopus is said to be non-septate because it

A

does not contain chloropyll

B

has no cross wall

C

is vacuoled

D

stores oil globus

 

Answer

 

6

The function of ribosome in cells is

A

protein synthesis

B

starch synthesis

C

transport of material

D

lipid storage

 

Answer

 

7

In which of the following does external fertilization take place?

A

toad

B

lizard

C

bird

D

cockroach

 

Answer

 

8

The villus in the small intestine is significant because

A

Increases the surface area for absorption

B

increases the surface area for digestion

C

assists in mixing digested food

D

assists in filtering undigested food

 

Answer

 

 

9

The butterfly is of great economic importance because

A

of it’s use in scientific studies

B

it sucks nectar from flowers

C

it adds to the beauty of the environment

D

it pollinates flowers of crops and other plants

 

Answer

 

10

The bright colours of the comb and feathers in the peacock are for?

A

sex differentiation

B

beauty

C

courtship

D

defence

What is the term used to describe biotic and abiotic factors in the environment of the organism?

A

habitat

B

biome

C

ecosystem

D

ecological niche

 

Answer

 

12

Which of the following instruments is NOT used in measuring abiotic factors in any habitat?

A

microscope

B

  1. windvane

C

  1. thermometer

D

  1. hygrometer

 

Answer

 

13

The smallest living organisms which share the characteristics of both living and non-living matter are

A

bacteria

B

fungi

C

viruses

D

protozoa

 

Answer

 

14

The process by which a red blood cell placed in distilled water absorbs water until it burst and realease it’s content into the surrounding is known as

A

osmosis

B

plasmolysis

C

turgidity

D

hemolysis

 

Answer

 

 

15

Which of the following waste products in plants is excreted through the stomata and lenticles?

A

carbon dioxide

B

alkaloids

C

tannins

D

anthoocyanins

 

Answer

 

16

Use the diagram to answer the question

The vertebra illustrated is

A

lumber

B

thoracic

C

caudal

D

cervical

 

Answer

 

17

Use the diagram to answer the question

The neural arch is labelled

A

i

B

ii

C

iii

D

iv

 

Answer

 

18

The excretory structure in the earthworm is the

A

malphighian tubule

B

flame cell

C

nephridium

D

kidney

 

Answer

 

 

19

In which of the following vertebrates does the skin function as a respiratory surface

A

rat

B

lizard

C

fish

D

frog

 

Answer

 

20

The process of walking is under the control of the part of the brain called

A

optic lobe

B

olfactory lobe

C

cerebellum

D

medulla oblongata

The ability of the eyes to focus on both near and distance objects is termed

A

image formation

B

refraction

C

hypermetropia

D

accommodation

 

Answer

 

22

A group pf organism of different species living in a particular area is described as a

A

colony

B

community

C

population

D

niche

 

Answer

 

23

The biological association that contributes directly to succession in a community is

A

competition

B

predation

C

parasitism

D

commensalism

 

Answer

 

24

Floating microscopic heterotrophs are mostly grouped as

A

phytoplankton

B

zooplankton

C

microbes

D

nekton

 

Answer

 

 

25

Vaccination is carried out in order to

A

check the production of poison

B

increase the activities of white blood cells

C

increase the number of red blood cells

D

stimulate the production of anti-bodies

 

Answer

 

26

For growth to occur in organisms, the rate of

A

anabolism must exceed that of catabolism

B

catabolism must exceed that of anabolism

C

food storage must be low

D

food storage must be high

 

Answer

 

27

The probability of a baby being a boy or a girl depends on the contribution of the

A

father’s sex cells

B

father’s stomatic chromosome

C

mother’s sex cell

D

mother’s X-chromosome

 

Answer

 

28

Both recesssive and dominant characters are found

A

on different chromosome in the cell

B

at the same logus of a homologous chromosome

C

at a different loci of a homologous chromosome

D

on the same chromatid in a chromosome

 

Answer

 

 

29

In a popu;ation of living things, the parameters of size, height, weight and colours are examoles of

A

continuous variation

B

non-heritable variation

C

discontinuous variation

D

physiological variation

 

Answer

 

30

Use the diagram to answer the question.

The process of water loss and intake indicated by the arrows labelled i and ii are respectively

A

evaporation and osmosis

B

exhalation and osmosis

C

osmosis and diffusion

D

urination and diffusion

The noticeable adaptation of the animal to it’s aquatic habitat is the possession of

A

webbed digits

B

four limb

C

wide mouth

D

large eyes

 

Answer

 

32

Paternity disputes can most accurately be resolved through the use of

A

blood group typing

B

finger printing

C

tongue rolling

D

DNA Analysis

 

Answer

 

33

Use the table below to answer the question.

High relative humidity will be expected in Zones

A

ii and iv

B

ii and iii

C

i and iii

D

i and iv

 

Answer

 

34

Use the table to answer the question.

Which of the zones is likely to be a desert?

A

i

B

ii

C

iii

D

iv

 

Answer

 

 

35

When bacteria swim from cold to warm regions, this is known as

A

positive phototaxis

B

negative phototaxis

C

positive thermotaxis

D

negative chemotaxis

 

Answer

 

36

The only caste in the termite colony whose members can feed themselves are the

A

workers

B

reproductives

C

soldiers

D

nymphs

 

Answer

 

37

Which of the following os the best explanation for a child who is phenotypically short and born of two tall parents

A

both parent possess genes for shortness

B

the father possess a gene for shortness

C

nature makes the child short

D

None of the above

 

Answer

 

38

Which of the following vertebrates has the most simple structured heart

A

reptile

B

fish

C

mammal

D

Amphibian

 

Answer

 

 

39

Use the diagram to answer the question.

The type of protective adaption exhibited by the animal is

A

disruptive colouration

B

flash colouration

C

countershading colouration

D

warning colouration

 

Answer

 

40

Use the diagram to answer the question.

The structure labelled i is

A

photosensitive

B

radiosensitive

C

chemoreceptive

D

tactile

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