Question

Give reasons:
a. Gaseous exchange does not take place through bronchioles
b. Plants do not have separate excretory organs.
Brain cells need constant supply of oxygen.
d. Double circulation of blood enables thermo regulation​

Answer 1

Explanation:

a) because it takes place only by alveoli but not in bronchiols they are not richly supplied with blood vessels to exchange the gas particles

b) they not have because they are excrete the waste in many ways such as resins and gums and into soil etc

so they not required

c) because oxygen is required to perform all the function by the brain hence oxygen play an important role in brain

d) it enables only in bird because the temperature is depend upon the environment

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