NCERT Class 7 Science Chapter 10 Respiration in Organisms Extra Questions

NCERT Class 7 Science Chapter 10 Respiration in Organisms Extra Questions and Answers

Respiration in Organisms Extra Questions

Class 7 Science Chapter 10 Extra Questions and Answers – Respiration in Organisms. Here in this Page Class VII Students can Learn Extra Questions & Answer 10th Chapter Science fully Inside.

We Provided Here Respiration in Organisms Science Chapter 10 Long Answer Type Question, Very Short Type Questions (VSA) / MCQ Type Questions, Short Type Questions (SA).

Class 7 Science Chapter 10 Extra Question with Answer – Respiration in Organisms

Science Chapter 10 Respiration in Organisms Class 7 Inside 5 Marks, 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.

1) Fill in the blanks:

a) The breathing organs in fish are ___. (Grills)

b) The leaves of the plants have tiny pores called ____ for exchange of gas. (Stomata)

c) The taking in of air rich in oxygen into the body is called ____. (Inhalation)

d) ____ are single-celled organisms. (Yeasts)

2) Multiple Choice Questions:

a) In cockroaches, air enters the body through ____?

a) Grills b) Grills      c) Spiracles

Ans. c) Spiracles

b) The normal range of breathing rate per minute in an average adult person at rest is ____?

a) 15-18 b) 20-25 c) 30-37

Ans. a) 15-18

c) The giving out of air rich in carbon dioxide is known as ____?

a) Exhalation b) Inhalation

Ans. a) Exhalation

d) Yeasts get energy through ____ respiration?

a) Anaerobic respiration b) Aerobic respiration c) Cellular respiration

Ans. a) Anaerobic respiration

3) Answer the following questions:

a) What is cellular respiration? Where does it take place?

Ans. The process of breakdown of food in the cell with the release of energy is called cellular respiration.

It takes place in the cells of all organisms.

 

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b) What is anaerobic respiration? Give an example of anaerobe.

Ans. When breakdown of food occurs without using oxygen it is called anaerobic respiration.

An example of anaerobe is yeasts.

c) Why smoking must be avoided?

Ans. Smoking damages lungs. It is also linked to cancer. So, it must be avoided.

d) Why does a man breathe faster and deeper than usual after finishing cycling?

Ans. A man breathe faster and deeper than usual after finishing cycling because during heavy exercise, the breathing rate can increase upto 25 times per minute.

e) We get relief from cramps after a hot water bath or a massage. Why?

Ans. We get relief from cramps after a hot water bath or a massage. This is because hot water bath or massage improves circulation of blood. As a result, the supply of oxygen to the muscle cells increases.

4) Mark your answer as per the codes provide below:

a) A: Respiration is essential for survival of living organisms.

R: It releases energy from the food.

I.) Both A and R are true and R is the correct explanation of A.

II.) Both A and R are true but R is not the correct explanation of A.

III.) A is true but R is false.

IV.) A is false but R is true.

V.) Both A and R are false.

Ans. I. Both A and R are true and R is the correct explanation of A.

b) A: We sneeze.

R: Sometimes foreign particles of air may get past the hair in the nasal cavity which may irritate the lining of the cavity.

I.) Both A and R are true and R is the correct explanation of A.

II.) Both A and R are true but R is not the correct explanation of A.

III.) A is true but R is false.

IV.) A is false but R is true.

V.) Both A and R are false.

Ans. I. Both A and R are true and R is the correct explanation of A.

5) When we inhale air, it passes through our nostrils into the nasal cavity. From the nasal cavity, the air reaches our lungs through the windpipe. Lungs are present in the chest cavity. This cavity is surrounded by ribs on the sides. A large, muscular sheet called diaphragm forms the floor of the chest cavity. Breathing involves the movement of the diaphragm and the rib cage.

a) Lungs are present in the ___ cavity. (Chest)

b) A large, muscular sheet called ___ forms the floor of the chest cavity. (Diaphragm)

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Updated: April 6, 2023 — 11:32 am

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