IGCSE Biology Paper-2: Specimen Questions with Answers 84 - 86 of 103

Question number: 84

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Question

The diagram shows an organism. Use the key to identify the organism.

The figure shows an organism

The Figure Shows an Organism

the figure shows a organism. By Using key identify the organism

1 Hands with five fingers …………………. . go to Set 1

Hands with four fingers …………………. go to Set 2

2 Webbed Feet …………………………………… A

Without Webbed Feet ………………………………. B

3 tail with fins ………………………………………. . C

Tail without fins …………………………………… D

Choices

Choice (4) Response

a.

Set 2: Tail with Find

b.

Set 1: Webbed feet

c.

Set 2: Tail without Fins

d.

Set 1: Non-Webbed feet

Answer

d.

Explanation

In biology, an identification key is a computer-aided device that aids the identification of biological entities, such as plants, animals, fossils, microorganisms, and pollen grains. In above diagram human being is identify by the method of key.

Question number: 85

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Question

In digestive system of human beings digestion start in ………. . and digestion is completed in………. . ?

Choices

Choice (4) Response

a.

Gullet and large intestine

b.

Gullet and small intestine

c.

Mouth and stomach

d.

Mouth and small intestine

Answer

d.

Explanation

Digestion is a process of breakdown of food materials into simpler compounds. In digestive system of human beings, digestion start in mouth and digestion is completed in small intestine.

Question number: 86

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Question

Which statement is right?

Choices

Choice (4) Response

a.

In lipids fatty acids are usually in the form of Easter

b.

Oleic, Linoleic and linolenic acids are unsaturated fatty acids

c.

Palmitic acid and stearic acid are the example of saturated fatty acids

d.

All a. , b. and c. are correct

Answer

d.

Explanation

Fatty acid is a carboxylic acid with a long aliphatic tail chain mainly made up in the form of Easter. These can be of two types either saturated or unsaturated. Palmitic acid and stearic acid are the example of saturated fatty acids And Oleic, Linoleic and linolenic acids are unsaturated fatty acids.