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2020 - JAMB Biology Past Questions and Answers - page 1

1

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

A

Adrenalin

B

Auxin

C

Insulin

D

Thyroxine

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2

Deamination occurs in the?

 

A

Kidney

B

Pancreas

C

Spleen

D

Liver

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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

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4

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

A

parasitism

B

commensalism

C

saprophytism

D

holophytism

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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

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6

The function of ribosome in cells is

A

protein synthesis

B

starch synthesis

C

transport of material

D

lipid storage

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7

In which of the following does external fertilization take place?

A

toad

B

lizard

C

bird

D

cockroach

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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

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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

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10

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

A

sex differentiation

B

beauty

C

courtship

D

defence

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