IGCSE Biology Paper-3: Specimen Questions with Answers 200 - 204 of 358

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Question 200

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How biotic and abiotic factors involved in carbon cycle.

Explanation

Biotic factors are plants animals and abiotic factors involve sun light, soil, rocks . All factors are used for the cycling of carbon cycle.

Passage

Figure shows a diagram of part of the digestive system, associated organs and blood vessels.

Shows Different Parts of Human Digestive System

Question 201 (1 of 2 Based on Passage)

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Name the parts I & II given in the diagram.

Explanation

I-gullet

II-Stomach

Question 202 (2 of 2 Based on Passage)

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What are the main functions of given part I and II.

Explanation

Part I, which is gullet, which transfer food and drinks from the mouth to start digestion in the stomach.

Part II is the stomach that chemically and mechanically breaks down food.

Passage

Figure shows the eye in section.

Inner Structure and Parts of Human Eye

Question 203 (1 of 2 Based on Passage)

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State the name and function of labelled parts (A & B) of the eye.

Explanation

A-lens-lens supports to refract light to be focused on the retina.

B-retina- It takes the visual information and converts that information into a neural ‘image’ that it then transmits to the brain by optic nerve.

Question 204 (2 of 2 Based on Passage)

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What is the difference between near vision and distance vision?

Explanation

1. In near vision, ciliary muscle contracts but in distance vision, ciliary muscle relax.

2. In near vision lens becomes more convex and in distance vision lens become flat.

Difference between Near Vision and Distance Vision

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