IGCSE Biology Paper-2: Specimen Questions with Answers 10 - 12 of 103

Question number: 10

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Question

Which part is known as primary root?

Figure shows structure of root

Figure Shows Structure of Root

Above figure is showing structure of root with its different parts

Choices

Choice (4) Response

a.

Part D

b.

Part B

c.

Part A

d.

Part C

Answer

c.

Explanation

Part A is primary root. It is the thickest. It grows downwards and then divided into its sub parts.

Question number: 11

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Question

Which statement describes passive transport?

Choices

Choice (4) Response

a.

It requires cellular energy

b.

In passive transport Movement of molecules DOWN the concentration gradient occur

c.

Phagocytosis, pinocytosis, sodium/potassium pump are the examples of passive transport

d.

Transport occurs from a low concentration of solute to high concentration of solute

Answer

b.

Explanation

Passive transport is a movement of biochemical and other atomic or molecular substances across cell membranes without need of energy input.

Image shows mechanism of passive transport

Image Shows Mechanism of Passive Transport

Above image shows a movement of biochemical molecules across cell membranes without need of energy

Question number: 12

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Question

The figure shows a picture of fruit. What is the part mesocarp in above diagram?

Figure shows a fruit of mango

Figure Shows a Fruit of Mango

Different parts of a fruit are shown in above fruit

Choices

Choice (4) Response

a.

D

b.

C

c.

A

d.

B

Answer

d.

Explanation

The mesocarp is the fleshy middle layer of the pericarp of a fruit; it is found between the epicarp and the endocarp. It is usually the part of the fruit that is eaten. . Mesocarp also called as any fruit that is fleshy throughout.