Sieve tubes are better suited for translocation,because

  • A
    Possess broader lumen and perforated cross walls
  • B
    Are broader than long
  • C
    Possess bordered pits
  • D
    Possess no end walls

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Write a note on complex tissues.

Which one of the following statements pertaining to plant structure is correct?

Deciduous plants shed their leaves during hot summer or in autumn. This process of shedding of leaves is called abscission. Apart from physiological changes,what anatomical mechanism is involved in the abscission of leaves?

In sclerenchymatous cells,the lignin deposition:

Sclerenchyma usually . . . . . . and . . . . . . protoplasts.

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