Question

18. Why do we often sneeze when we inhale a lot of dust-
SECTION-E
19. (a) Does transpiration serve any useful function in plants? Explain.
(b) Why is transport of materials necessary in a plant or in an animal? Explain.
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On with eyamples​

Answer 1

Answer:

a)Yes, transpiration is very much essential in plants. It is the process of evaporation of water from plants. It happens through stomata present in the leaf surface. This process helps plants to supply water from roots to top parts of plants thereby distributing water to all parts of the plant.

b)Transport of materials is necessary in both plants and animals as every cell needs a regular supply of nutrients and oxygen for releasing energy through respiration. ... The oxygen that we inhale is also transported to all the cells of the body.