IGCSE Biology Paper-2: Specimen Questions with Answers 32 - 34 of 203

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Question 32

Question

MCQ▾

The main function of blood plasma is –

Choices

Choice (4)

a.

Maintenance of red cell size

b.

Transport of hormones

c.

Transport of antibodies

d.

All a., b. and c. are correct

Answer

d.

Explanation

Blood plasma is the liquid part of the blood, which looks slightly yellow, and most of part is made up of water. The main functions of blood plasma are Transport nutrients, transport waste, maintain blood volume, transport hormones, Maintenance of red cell size, defend the body etc.

Question 33

Question

MCQ▾

Picture shows a pyramid. In this picture the direction of energy will be?

Picture Shows a Pyramid

Choices

Choice (4)

a.

Shows a Pyramid with Different Directions – Choice A

b.

Shows a Pyramid with Different Directions – Choice B

c.

Picture Shows a Pyramid with Different Directions – Choice C

d.

Shows a Pyramid with Different Directions – Choice D

Answer

a.

Explanation

In given pyramid energy will be transfer from producer to herbivore, than herbivore to carnivore. Moreover, it will decrease in each tropic level. Pyramid of energy is always upright.

Question 34

Question

MCQ▾

The diagram shows phosphorous cycle. The process X is known as-

Image Showing a Phosphorus Cycle

Choices

Choice (4)

a.

Metabolism

b.

Absorption

c.

Decomposition

d.

Consumption

Answer

c.

Explanation

The phosphorous cycle include the movement of phosphate in living and nonliving world. It circulates by the earth՚s soils, rocks, waters, and atmosphere and in the organisms that inhabit these many ecosystems.

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