Biology | Study Mode

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Question 11

Which material is NOT necessary for the manufacture of plant food?

carbon(iv)oxide

chloropyll

oxygen

sunlight

water

Explanation

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Correct option: C

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Question 12

Lianas is to tropical rain forest as an extensive root system is to ---------------- habitat

afro-alpine

estuarine

fresh - water

grass-land

marine

Explanation

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Correct option: D

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Question 13

Which of these statements is ONE an idea contained in Lamarcks theory of evolution.?

acquired characters are inheritable

changes in the environment result in corresponding changes in the species

environmental changes cause the organism to acquire new structures as an adjustment to a new prevailing environment

organisms develop specialized characteristic by use and disuse of organs

organisms tent to an increase in number at an exponential rate

Explanation

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Correct option: E

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Question 14

The release of sperms through the urethral opening into the vagina is called

copulation

ejaculation

fertilization

spermatogenesis

urination

Explanation

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Correct option: B

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Question 15

An essential with the dental formula I 0/3 : C 0/1 : P 3/3 : M 3/3 is most likely adapted for ___________ nutrition .

carnivorous

herbivorous

holophytic

ominivorous

parasitic

Explanation

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Correct option: B

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Question 16

Which of the following is NOT a natural source of energy ?

coal

electricity

food

sun

water

Explanation

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Correct option: B

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Question 17

Modern method of classification of living things is based on similarity of?

colour

habitat

shape

size

structure

Explanation

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Correct option: E

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Question 18

The part of the fruit which serves a protective function is called

endocary

epicarp

mesocarp

pericarp

testa

Explanation

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Correct option: B

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Question 19

Two identical twin boys had different finger print. This proves that

finger print is a sex-linked character

the genotypes of the twins are similar

the phenotypes of the twins are similar

there are morphological variations

there are physiological variation in the twins

Explanation

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Correct option: E

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Question 20

What is the result of placing a red blood cell in a hypertonic solution ?

crenation

haemolysis

osmosis

plasmolysis

wilting

Explanation

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Correct option: A

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