Match the following. Column 1 Column 2 1. Respiration through spiracles (i) Absence of oxygen 2. Respiration through skin (ii) Presence of oxygen 3. Internal respiration (iii) Insects 4. Anaerobic respiration (iv) Earthworms 5. Aerobic respiration (v) Cellular respiration

1 - (iii) Insects like cockroaches respire through spiracles. The spiracles are external openings of tiny tubes called trachea. 2 - (iv) Earthworms respire through their moist skin which is supplied with thin blood vessels. They take in atmospheric oxygen through their skin. 3 - (v) Internal respiration is also known as cellular respiration as it occurs at the cellular level of organisation. In this process glucose is broken into carbon dioxide, water and energy by utilising the oxygen transported by the red blood cells. 4 - (i) Anaerobic respiration is the respiration that takes place in the absence of oxygen. Anaerobic respiration takes place in the muscles during hard exercise and in lower organisms like yeast, bacteria. 5 - (ii) Aerobic respiration is the respiration that takes place in the presence of oxygen. Exchange of gases for respiration in plants occurs through stomata while in humans it occurs through alveoli. Hence the correct matching is: Column A Column B 1. Respiration through spiracles (iii) Insects 2. Respiration through skin (iv) Earthworms 3. Internal respiration (v) Cellular respiration 4. Anaerobic respiration (i) Absence of oxygen 5. Aerobic respiration (ii) Presence of oxygen

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Interactive Science 7>Chapter 10 - Respiration in Organisms>SUMMATIVE ASSESSMENT>Q 2

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Gaseous exchange takes place in the alveoli in lungs.

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Important Questions on Respiration in Organisms

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Interactive Science 7>Chapter 10 - Respiration in Organisms>SUMMATIVE ASSESSMENT>Q 3

Trachea is a bone.

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Interactive Science 7>Chapter 10 - Respiration in Organisms>SUMMATIVE ASSESSMENT>Q 4

Plants take in oxygen and release carbon dioxide during respiration.

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Interactive Science 7>Chapter 10 - Respiration in Organisms>SUMMATIVE ASSESSMENT>Q 5

Stomata are present only on the upper surface of leaves.

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Interactive Science 7>Chapter 10 - Respiration in Organisms>SUMMATIVE ASSESSMENT>Match the following

Match the following.

Column 1	Column 2
1. Respiration through spiracles	(i) Absence of oxygen
2. Respiration through skin	(ii) Presence of oxygen
3. Internal respiration	(iii) Insects
4. Anaerobic respiration	(iv) Earthworms
5. Aerobic respiration	(v) Cellular respiration