EASY
7th CBSE
IMPORTANT
Earn 100

Take a deep breath and measure the chest size during inhalation and exhalation. What do you observe?

Important Questions on Respiration

EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 2
A large amount of energy is released in anaerobic respiration.
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 2
Muscle cramps happen due to the accumulation of lactic acid in muscles.
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 2
The only mode of respiration in frogs is through their moist skin.
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 2
Spiracles are present in earthworms which help them in respiration.
EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 1

Give reasons for the following:

Apart from stomata, plants exchange gases through lenticels also.

EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 1

Give reasons for the following:

The percentage of carbon dioxide is more in the exhaled air than in the inhaled air.

EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 1

Give reasons for the following:

A layer of mucus is present in the nasal cavity.

EASY
7th CBSE
IMPORTANT
The Science Hub>Chapter 9 - Respiration>Exercises>Q 2
Differentiate between aerobic and anaerobic respiration.