Match the statement ‘A’ with the term ‘B’: Statement ‘A’ Term ‘B’ (a) Openings on leaf surface for the exchange of gases. (i) Haemoglobin (b) Openings on the body of an insect through which they take in fresh air for breathing. (ii) Gills (c) Organ of breathing in fish. (iii) Chlorophyll (d) Organ of breathing in man. (iv) Spiracles (e) Organ of breathing in insects. (v) Lungs (f) A substance capable of trapping sunlight energy. (vi) Stomata (g) A substance capable of trapping oxygen. (vii) Tracheae

(a)-(vi) Stomata are the tiny pores present on the surface of leaves. They help in the exchange of gases and in the process of transpiration. (b)-(iv) Insects do not have lungs to breathe. They have spiracles and tracheae. These spiracles are small pores present at each segment of an insect body. The muscular valves of the spiracles, closed most of the time, open only to allow the uptake of oxygen and the escape of carbon dioxide. Fresh air enters through these spiracles to reach into the tracheae (a network of fine tubes) and circulates within the body and help in breathing. (c)-(ii) Fishes breathe with the help of gills. They are present under the gill covers on both the sides of the head. Fish gulps water all the time. The gulped water contains the dissolved oxygen which enters the mouth and passes through the gills to come out. When this water passes out through gills, then the oxygen present in water is absorbed by the walls of the gills. (d)-(v) Lungs are organs of breathing in man. The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). It is covered with a membrane known as pleura. (e)-(vii) The organs of breathing in insects are tracheae. Tracheae are a network of fine tubes which are present on the body of the cockroach. These tracheae open on side of the body through small pores called spiracles. They present on each segment of the body. (f)-(iii) Chlorophyll is a green pigment present in plants which help the plants to trap the solar energy. It also provides colour to the leaves. Chlorophyll is located in a plant’s chloroplasts, which are tiny structures in a plant’s cells. (g)-(i) Haemoglobin is the red-coloured pigment present in the blood. It has the capacity to trap the oxygen present in the blood. It is present in the RBCs and collects oxygen from the lungs and transports it to all the parts of the body. Statement ‘A’ Term ‘B’ (a) Openings on leaf surface for the exchange of gases. (vi) Stomata (b) Openings on the body of an insect through which they take in fresh air for breathing. (iv) Spiracles (c) Organ of breathing in fish. (ii) Gills (d) Organ of breathing in man. (v) Lungs (e) Organ of breathing in insects. (vii) Tracheae (f) A substance capable of trapping sunlight energy. (iii) Chlorophyll (g) A substance capable of trapping oxygen. (i) Haemoglobin

E M B I B E

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES

B K Gowel and Sangeeta Solutions for Chapter: Respiration, The Breath of Life, Exercise 10: EXERCISES

Author:B K Gowel & Sangeeta

B K Gowel Science Solutions for Exercise - B K Gowel and Sangeeta Solutions for Chapter: Respiration, The Breath of Life, Exercise 10: EXERCISES

Attempt the free practice questions on Chapter 9: Respiration, The Breath of Life, Exercise 10: EXERCISES with hints and solutions to strengthen your understanding. S. Chand's SCIENCE For Class VII solutions are prepared by Experienced Embibe Experts.

Questions from B K Gowel and Sangeeta Solutions for Chapter: Respiration, The Breath of Life, Exercise 10: EXERCISES with Hints & Solutions

EASY

7th CBSE

IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q II

Complete the following statement:
Food + Oxygen = Carbon dioxide + Water vapour + _____.

MEDIUM

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IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q III

Match the statement ‘A’ with the term ‘B’:

Statement ‘A’	Term ‘B’
(a) Openings on leaf surface for the exchange of gases.	(i) Haemoglobin
(b) Openings on the body of an insect through which they take in fresh air for breathing.	(ii) Gills
(c) Organ of breathing in fish.	(iii) Chlorophyll
(d) Organ of breathing in man.	(iv) Spiracles
(e) Organ of breathing in insects.	(v) Lungs
(f) A substance capable of trapping sunlight energy.	(vi) Stomata
(g) A substance capable of trapping oxygen.	(vii) Tracheae

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7th CBSE

IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q VIII

Record the differences between Respiration and breathing.

EASY

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IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q VIII

State the difference between respiration and combustion.

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IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q VIII

State the difference between Aerobic and anaerobic respiration.

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IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q XI

Release of carbon dioxide from a living body is the indication of the process of respiration but in green plants, oxygen is released during the daytime. Answer the following: How does the exchange of gases take place in plants during the daytime?

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IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q XI

The release of carbon dioxide from a living body is the indication of the process of respiration but in green plants, oxygen is released during the daytime. How does the exchange of gases take place in plants during nighttime?

MEDIUM

7th CBSE

IMPORTANT

S. Chand's SCIENCE For Class VII>Chapter 9 - Respiration, The Breath of Life>EXERCISES>Q XII

How would you demonstrate that exhaled air contains more of carbon dioxide than the inhaled air?