CIE Biology Paper-2: Specimen Questions 47 - 49 of 103

Question number: 47

MCQ▾

Question

Picture shows a food web

Picture shows a food web with crab

Picture shows a food web with crab

Image shows a food web with different producers, herbivore and carnivores

What are the autotrophs in given food web-?

Choices

Choice (4) Response
a.

Seaweed and shrimp

b.

Seaweed and plant plankton

c.

Sea Anemone and Seaweed

d.

Plant plankton and algae

Answer

b.

Explanation

Autotrophs comes under first trophic level of food web and they get energy by the process of photosynthesis. In given figure seaweed and plant planktons are the autotrophs.

Question number: 48

MCQ▾

Question

Respiration is the process by which animals exchange some gases with their environment. Complete the process of respiration.

C6H12O6 + 6O2 →?

Choices

Choice (4) Response
a.

6O2 + 6H2O + Energy

b.

6CO2 + 6H2O + Energy

c.

CH3 + 2HOH + Energy

d. None of the above

Answer

b.

Explanation

Respiration is the movement of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

C6H12O6 + 6O2 →6C O2 + 6H2O + Energy

Question number: 49

MCQ▾

Question

The example of ionic radiation is-

Choices

Choice (4) Response
a.

X-rays

b.

UV rays

c.

Solar rays

d.

Visible rays

Answer

a.

Explanation

Ionizing radiation is radiation that carries enough energy to free electrons from atoms or molecules, thereby ionizing them and example of such ionic radiation are- X-rays and gamma rays. All other three rays are the example of non-ionizing rays.

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