Q14 of 75 Page 6

What are (i) stomata and (ii) lenticels?

(i) Stomata are tiny apertures found on the surface of the leaf, which regulate the exchange of respiratory gases and transpiration.
(ii) Lenticels are the raised pores in the woody plants that allow the exchange of gases between the atmosphere and the internal tissues.

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12 In which kind of respiration is more energy released? 13 Which part of the roots is involved in exchange of respiratory gases? 15 Give two points of differences between respiration in plants and respiration in animals. 16 Name the respiratory organs of
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(ii) mosquito
(iii) earthworm
(iv) dog.