CIE Biology Paper-3: Specimen Questions 208 - 211 of 230

Passage

Figure shows a part of respiratory system of human being

Figure shows a part of respiratory system of human being

In given picture of respiratory system of human being Label the part Y

Question number: 208 (1 of 2 Based on Passage) Show Passage

Short Answer Question▾

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What is the functions of part Y. ?

Explanation

Bronchi are the main passageway into the lungs. When air is inhaled, the oxygen in it cannot be directly absorbed and used by the body. Each part of the respiratory system leading up to the bronchioles is smaller than the last. The bronchioles turn into small air sacs called alveoli, which allows oxygen to be taken in by the body and carbon dioxide to be eliminated.

Question number: 209 (2 of 2 Based on Passage) Show Passage

Short Answer Question▾

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This diagram shows a part of respiratory system of human being. Label the part Y

Explanation

Y part is Bronchus

Question number: 210

Short Answer Question▾

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What characteristics Polar bears have for survival in the Arctic area?

Explanation

Polar bear have features like-

  • a white look, as cover-up from prey on the snow
  • dense layers of fat and fur, for protection against the cold
  • a lesser surface area to volume ratio, to minimize heat loss

Question number: 211

Short Answer Question▾

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State which of the drawings shows a Platyhelminthes. State one reason for your choice

above picture shows an example of Annelida and Platyhelminthes.

above picture shows an example of Annelida and Platyhelminthes.

Figure show an example of Annelida and Platyhelminthes. Define Platyhelminthes with a suitable reason.

Explanation

Figure B is the example of Platyhelminthes because it have flat soften body without anus.

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