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Respiration In Plants MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

Quick Facts

7 Questions around this concept.

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MEDIUM

On oxidation of 1 molecule of glucose, ______ ATP molecules are produced through aerobic respiration

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Assertion (A): During the respiration process, oxygen is transformed into carbon dioxide gas

Reason (R): The same root hairs that complete the root respiration process spread carbon dioxide gas in the opposite direction, i.e. out of the roots.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

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Concepts Covered - 1

Respiratory System in Plants

The plants require O2 for respiration to occur and they also give out CO2.
Hence, plants have systems in place that ensure the availability of O2
Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose.

Why Plants Can Get Along Without Respiratory Organs?

First, each plant part takes care of its own gas-exchange needs. There is very little transport of gases from one plant part to another.
Second, plants do not present great demands for gas exchange. Roots, stems and leaves respire at rates far lower than animals do.
Third, the distance that gases must diffuse even in large, bulky plants is not great. Each living cell in a plant is located quite close to the surface of the plant.