Question

Assertion : Plants have no specialised respiratory organs.
Reason : There is very little transport of gases from one plant part to another.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

Plants, unlike animals, have no specialised organs for gaseous exchange. Gaseous exchange in plants occurs by diffusion through stomata and lenticels. There are various reason for the absence of respiratory organs in plants. Each part of plant takes care of its own gas exchange needs. There is little transport of gases from one part to another. Plants do not require much demands for gas exchange.Thus the distance that gases must diffuse is not large.