Question

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

Assertion: Plant growth is unique because plants retain the capacity for unlimited growth throughout their life.

Reason: Plants have different type of meristems at certain locations in their body that have capacity to divide and self-perpetuate.

Answer 1

Growth can be defined as a permanent increment in dry weight, size, mass or volume of a cell, organ or organism, which is usually irreversible in nature. Generally, it requires both anabolic and catabolic processes.

Growth of plants is exceptional because they retain the ability of unlimited growth throughout their lifetime.

In plants, growth is accomplished by cell division as well as cell enlargement.

Higher plants possess specific areas which retain the ability to divide, called meristems. This form of growth where there is addition of new cells to the plant body by the activity of meristematic cells is called the open form of growth.

Plant growth is localised because of the meristems. Cells of the meristematic tissue have the ability to divide and self-perpetuate.

Hence, both assertion and reason are correct and reason is the correct explanation of the assertion.