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RRB Group-D Model Paper 12 with answers for online practice

Question : 74

Total: 100

Epidermal cells of plant roots increase their absorption surface by having

Part of the plant	Description Function
Root Hairs	Root hairs are the extensions of the epidermal cells of the plants. These increase the surface area of the roots and help in better absorption of water and nutrients
Endodermis	The layer separating Stele (vascular tissue located in the inner portion of the root) from the ground tissue. It monitors the movement of minerals into the roots.
Stomata	These are tiny openings on the surface of leaves. The exchange of gases (oxygen and carbon dioxide) takes place through these pores. Opening and closing are monitored by the guard cells.

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