NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANATOMY OF FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Assertion:Epidermal cells have small amount of cytoplasm and a large vacuole. Reason:Guard cells are dumb bell shaped in dicots and bean shaped in monocots
A
A
B
B
C
C
D
D
Explanation: 

Detailed explanation-1: -(i) Epidermal cell has small amount of cytoplasm and a large vacuole. (ii) Waxy cuticle layer is absent in roots. (iii) Root hairs are unicellular, while stem hairs/trichomes are multicellular. (iv) Trichomes may be branched or unbranched, soft or stiff and prevent transpiration.

Detailed explanation-2: -This is because the plant don’t possess the ability to move freely like that of animals. Thus, they possess large vacuoles as a reservoir in unfavorable conditions.

Detailed explanation-3: -Epidermal cells are parenchymatous cells with small amount of cytoplasm and a a large vacuole. Only a plant cell do have a large vacuole which holds large amount of water and food. For example, one of the modified cell of epidermal cell is subsidiary cell. The subsidiary cell lie in association with guard cells.

Detailed explanation-4: -So, the correct option is ‘Dumb-bell shaped’.

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