Quiescent centre in root meristem serves as

Site for storage of food which is utilised during maturation

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Reservoir of growth hormones

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Reserve for replenishment of damaged cells of the meristem

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Region for absorption of water

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Solution

The correct option is D Reserve for replenishment of damaged cells of the meristem
Quiescent centre is located centrally in the root apical meristem. This region has comparatively inactive cells. These cells have a lower concentration of the proteins, DNA and RNA and these are maintained at a lower mitotic activity. It is responsible for providing the cells to the root apical meristem during the injury or the heavy growth period
So, the correct answer is 'Reserve for replenishment of damaged cells of the meristem'

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Q. Which of the meristem is responsible for secondary growth?

Which one of the following pairs is correctly matched?
(a) Meristem — Actively dividing cells
(b) Xylem — Transport of food
(c) Phloem — Transport of water
(d) Sclerenchyma — Storage of starch.

Q. Statement 1: Root cap protects the root meristem from the friction of the soil and its outer cells are continuously replaced by newer ones.
Statement 2: The effect of the soil-friction damages the outer cells of root cap which are peeled off and replaced by new cells produced by root meristem.

Q. Assertion :The quiescent centre acts as a reservoir of cells which constitute a permanent source of active initials. Reason: Cells of inactive region of quiescent centre become active when the previously active initials get damaged.

Q. Assertion :The quiescent centre acts as a reservior of cells which constitute a permanent source of active initials. Reason: Cells of inactive region or quiescent centre become active when the previously active initials get damaged.

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