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NTA Abhyas NEET2020BotanyAnatomy of Flowering PlantsPractice

Two cross-sections of stem and root appear simple, when viewed by naked eye. But under microscope, they can be differentiated by

Options

  1. AExarch condition of root and stem
  2. BEndarch condition of stem and root
  3. CEndarch condition of root and exarch condition of stem
  4. DEndarch condition of stem and exarch condition of root

Correct answer

D. Endarch condition of stem and exarch condition of root

Step-by-step solution

Characteristic feature of stem is endarch condition of xylem tissue. In endarch, protoxylem is present towards the centre of stem, while metaxylem towards the pericycle. Characteristic feature of root is exarch condition of xylem tissue. In exarch condition, protoxylem is present towards the pericycle and metaxylem towards the center of the root.

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