IGCSE Biology Paper-3: Specimen Questions with Answers 151 - 153 of 358

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Question 151

Question

MCQ▾

Cardiac muscles are located in.

Choices

Choice (4)

a.

Bones

b.

Vessels

c.

Colliery body

d.

Heart

Answer

d.

Explanation

It is also called as heart muscle. These muscles found in the heart specifically the myocardium. Cardiac muscle is one of three major kind of muscle, the others being skeletal and smooth muscle

Passage

In given diagram A plant՚s leaves are covered by black paper and B plant is put in normal conditions.

Found the Effect on Growth in A

Question 152 (1 of 2 Based on Passage)

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Write in Short

Short Answer▾

What will happen after one week?

Explanation

The leaf which are covered A will start to lose its green color because of lack of sun light and photosynthesis process. In addition, plant B will grow normally and healthiest.

Question 153 (2 of 2 Based on Passage)

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Write in Short

Short Answer▾

What are the main plant growth factors? Describe them.

Explanation

There are mainly three plant growth factors, which are related to plant growth and development-

  1. Photosynthesis- It is the process in which green plants convert the light energy into chemical energy in the presence of chlorophyll using carbon di oxide and water.
  2. Respiration-In such process metabolization of sugar occurs for growth, reproduction and other processes.
  3. Transpiration-It is the process in which the loss of water occur by stomata of leaves.

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