IGCSE Biology Paper-4: Specimen Questions with Answers 104 - 105 of 279

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Question 104

Write in Brief

One Liner▾

Diagram shows which part of the plant. Write down its main function.

Image Shows a Part of Plant

Explanation

Part X is apical meristem of shoots

The main functions of apical meristem is related to growth. It increase the length between nodes. This type of growth is called primary growth. When a plant grows and gets thicker, it is called secondary growth.

Question 105

Edit

Describe in Detail

Essay▾

Discuss the effects of non-biodegradable plastics in the environment

Explanation

Plastic pollution has become a global phenomenon across the world and even to the most remote locations. Plastic is not biodegradable. It only breaks down into smaller compounds whereby its toxic chemicals ingested by animals, which we have also consumed. Plastic degrades due to solar radiation and oxidation into smaller and smaller pieces, all of which are still plastic polymers, eventually becoming individual molecules of plastic dust. They can also leave behind neurotoxins such as BPA in the organism. It can cause male reproductive failures. So it is very necessary to reuse or conversion of it to protect the environment.

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