Question

Naman recorded that at rest, he was breathing in and out at the rate of18 times per minute. After playing the footwall for 15 minutes, his breathing rate increased up to 27 times per minute. What could be the reason for this change in breathing rate?
(a) To fulfil the increased demand for water by the body
(b) To fulfil the increased demand for oxygen by the body
(c) To fulfil the increased demand for energy by the body
(d) To fulfil the increased demand for carbon dioxide by the body
6. A researcher wants to do research on penguins. For this, the researcher has to provide favourable conditions to penguins for their survival as they are usually found in polar conditions. What kind of seasonal conditions should be maintained by the researcher in the lab for keeping penguins?
a) : Cold summers and cold winters
b) : Warm summers and cold winters
c) : Wold summers and humid winters
d) : Very warm summers and warm winters
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Answer 1

Answer:

5. both b nd c because oxygen in body is energy

6. A

pls mark me brainless

Answer 2

Answer:

5 (b) To fulfil the increased demand for oxygen by the body is the answer.

6 (a) Cold summers and cold winters is the answer.

Explanation:

5. The change in breathing rate after performing a strenuous activity is due to a greater oxygen requirement by the body. This is the reason why the breathing rate increases after such an activity.

6. Penguins are found in the polar region. Hence, they can only adapt to a climate characterized by cold summers and cold winters that resemble their natural habitat.