CIE Biology Paper-3: Specimen Questions 151 - 154 of 230

Question number: 151

MCQ▾

Question

Cardiac muscles are located in.

Choices

Choice (4) Response
a.

Heart

b.

Vessels

c.

Colliery body

d.

Bones

Answer

a.

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

found the effect on growth in A

Covered and uncovered plant leaves in pot to know changes in leaves shape and color after one week

Question number: 152 (1 of 2 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

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 number: 153 (2 of 2 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

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.

Question number: 154

MCQ▾

Question

Genetic drift is done when some individual of species aggregate an island. This phenomenon is called.

Choices

Choice (4) Response
a.

Bottleneck effect

b.

Random effect

c.

Assortative effect

d.

Founder effect

Answer

d.

Explanation

Founder effect is a type of genetic drift in which genetic variations found when a new population is recognized through a very small number of individuals from a large population.

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