Epidermal cells of plant roots increase their absorption surface by having

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UPSC CAPF Previous Year Paper 1(Held on: 18 Aug 2019)
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  1. Scales
  2. Root hairs
  3. Endodermis
  4. Stomata

Answer (Detailed Solution Below)

Option 2 : Root hairs
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The correct answer is Root hairs.

Key Points

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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Fig: The regions of the root-tip

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