IGCSE Biology Paper-3: Specimen Questions with Answers 42 - 45 of 230

Question number: 42

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Desertification occurs in many parts of the world.

What are the main solutions for the desertification?

Explanation

Policies should be changed related to farm methods. Education is an important tool to understand people the best way to use land and farming process on that land. In some cases if there are fewer possibilities to prevent, desertification there should be need of research and advanced technologies

Question number: 43

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Metabolism is the main characteristic of life. Describe two other traits which are found in living organism

Explanation

(i) Cellular structure- It is a defining property of living beings. Each living being is made up of one or more cells.

(ii) Growth- it is an irreversible increase in the mass of on individual.

Passage

Figure below shows dispersal method of plant.

Image of various dispersal methods like milkweed and dandelion

Image of Various Dispersal Methods like Milkweed and Dandelion

Given Figure shows a type of dispersal method found in plants

Question number: 44 (1 of 2 Based on Passage) Show Passage

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Which type of dispersal method is this?

Explanation

Given picture shows Dispersal method by wind in plants.

Question number: 45 (2 of 2 Based on Passage) Show Passage

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What is the mechanism of fruit and seed dispersal by animals?

Explanation

Some animals digest only juicy parts of the fruit and pips are pass by animal’s digestive system. After excretion, it may form a new plant. Birds are also useful for dispersal method by their droppings. Some plant seeds have hook, which can easily transfer by animal’s fur.