IGCSE Biology Paper-2: Specimen Questions with Answers 40 - 43 of 103

Question number: 40

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Question

What do you mean by deforestation?

Choices

Choice (4) Response

a.

establishment of a forest

b.

stand of trees in an area

c.

Growth of trees

d.

permanent destruction of forests

Answer

d.

Explanation

Deforestation refers to the cutting, clearing, and removal of trees due to logging, mining, oil extraction etc.

Question number: 41

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Question

Possible effects of deforestation can be.

Choices

Choice (4) Response

a.

Soil erosion-Yes, Flooding-Yes

b.

Earthquake Yes, Volcanic eruption-Yes

c.

Soil erosion-No, Flooding-No

d.

Soil erosion-No, decrease in atmospheric carbon di oxide-yes

Answer

a.

Explanation

Deforestation is related to cutting or removal of forests. In addition, soil erosion and flood both can occur due to deforestation.

Question number: 42

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Question

In given diagram of chromosomes what is the part X?

Above diagram shows chromosome structure

Above Diagram Shows Chromosome Structure

In given diagram of chromosomes with its part are shown

Choices

Choice (4) Response

a.

Secondary construction

b.

Choromocentre

c.

Centromere

d.

None of the above

Answer

c.

Explanation

The centromere is the part of a chromosome that links sister chromatids, during the process of mitosis

Question number: 43

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Question

Which is the example of biodegradable material?

Choices

Choice (4) Response

a.

Plastic

b.

Garbage

c.

Rubbish

d.

Oil

Answer

b.

Explanation

Biodegradable materials are those materials which can be easily degrade by microorganisms and its example is garbage or eatable waste