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Standard IX

Biology

Breathing

Question 5 c ...

Question

Question 5 (c)
Tick the correct answer:
(c) Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9 – 12
(ii) 15–18
(iii) 21–24
(iv) 30–33

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Solution

The answer is (ii).

The normal range of breathing rate per minute in an average adult person at rest is 15–18.

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Similar questions

Tick the correct answer:

(a) In cockroaches, air enters the body through

(i) lungs

(iii) spiracles

(iv) skin

(b) During heavy exercise, we get cramps in the legs due to the accumulation of

(i) carbon dioxide

lactic acid

alcohol

(iv) water

(i) 9-12

(ii) 15-18

(iii) 21-24

(iv) 30-33

(d) During exhalation, the ribs

(i) move outwards

(ii) move downwards

(iii) move upwards

(iv) do not move at all

Normal range of breathing rate per minute in an average adult person at rest is:

Question 11
On an average, an adult human being at rest breathes 15–18 times per minute. The breathing rate, however, may differ under different conditions. Arrange the following activities given in the box in order of increasing breathing rates and give reason for your answer.

sleeping, cycling, brisk walk, watching TV

Q. What is the rate of breathing per minute in an adult when he is at rest?

Q. On an average , an adult human being at rest breathes in and out ............ times in a minute.

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Breathing

Standard IX Biology

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Question 5 (c) Tick the correct answer: (c) Normal range of breathing rate per minute in an average adult person at rest is: (i) 9 – 12 (ii) 15–18 (iii) 21–24 (iv) 30–33

The answer is (ii). The normal range of breathing rate per minute in an average adult person at rest is 15–18.

Question 5 (c)
Tick the correct answer:
(c) Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9 – 12
(ii) 15–18
(iii) 21–24
(iv) 30–33

The answer is (ii).

The normal range of breathing rate per minute in an average adult person at rest is 15–18.