Question

Give reason for the following: (i) Arteries are thick walled.
(ii) Herbivores have longer small intestine as compared to carnivores
(iii) The walls of trachea do not collapse when there is less air in it.​

Answer 1

Answer:

1) Arteries carry oxygenated blood from the heart to the different body parts. Blood emerges from the heart under high pressure. In order to withstand this pressure, arteries have thick walls.

2)The small intestine is longer in herbivore than in carnivore because herbivores eat only grass which is full of cellulose and the digestion of cellulose takes a long time. ... Herbivores need a longer small intestine to allow cellulose to be digested as taken from green plants.

3)In trachea , there are C shaped rings of cartilage which helps to hold them even when the air is less in it . Hence they do not collapse.

Explanation:

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