Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: Growth, differentiation and development are very closely related events in the life of a plant.

Reason: Development in plants (i.e., both growth and differentiation) is under the control of intrinsic and extrinsic factors.

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

Answer 1

The correct option is A If both assertion and reason are true but reason is not the correct explanation of the assertion.

Assertion-Reason relation
Growth is defined as the irreversible increase in the size of a cell or organ of an individual while differentiation is the specialisation of cells in such a manner that it attains a specific function which supports the metabolic functioning of the body.

Development is defined as all the changes that an organism undergoes from birth till senescence. All the three events are closely related for the growth of a plant.

Development is the sum of growth and differentiation. It is influenced by both intrinsic factors like genetic makeup, phytohormones, as well as extrinsic factors (light, temperature, nutrients etc.).

Hence, both statements are correct but reason is not the correct explanation of the assertion.