Biology - Questions and Answers, General Study (GK)

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341.

Which one of the following genetic disease is sex-linked?

(a)Tay-sachs disease

(b)Royal haemophilia

(c)Cystic fibrosis

(d)Hypertension

Comment

Answer is: BNA

342.

Sexual reproduction causes genetic variation because of

(a)Blending of genes

(b)Chromosomal changes

(c)Shuffling of genes

(d)All of the above

Comment

Answer is: DNA

343.

Number of chromosomes in a normal human body cell is

(a)43

(b)44

(d)46

Comment

Answer is: DNA

344.

Which one among the following is not correct about Down's syndrome?

(a)It is a genetic disorder

(b)Effected individual has early ageing

(c)Effected person has mental retardation

(d)Effected person has furrowed tongue

Comment

Answer is: BNA

345.

Ecosystem may be defined as

(a)A species along with environment

(b)Plant found in water

(c)Plants found on land

(d)All plants and animals species along with environment

Comment

Answer is: DNA

346.

Which one of the following organisms is likely to show the highest concentration of DDT, one it has been introduce into the ecosystem?

(a)Grasshopper

(b)Toad

(c)Snake

(d)Cattle

Comment

Answer is: CNA

347.

Auto ecology means

(a)Effect of soil on plant

(b)Effect of temperature of plant

(c)Effect of transpiration on plant

(d)Relationship species with their environment

Comment

Answer is: DNA

348.

When eat the flesh of goat are

(a)Primary consumer

(b)Secondary consumer

(c)Tertiary consumer

(d)None of the above

Comment

Answer is: BNA

349.

We got solar energy from

(a)Moon

(b)Sea

(c)Sun

(d)Air

Comment

Answer is: CNA

350.

In a food chain, energy transfer

(a)From river to earth

(b)Lower latitude to higher latitude

(c)From one organism to other organism

(d)None of the above

Comment

Answer is: CNA

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Biology - Questions and AnswersPage 35

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