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The protoplasmic streaming hypothesis fo...

The protoplasmic streaming hypothesis for food translocation has not been accepted on the following grounds.

A

It can not explain bi-direction movement

B

Mature sieve elements do not show streaming

C

It can not explain faster rate of translocation

D

All of the above

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The correct Answer is:
A
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AAKASH SERIES-TRANSPORT IN PLANTS -EXERCISE II
  1. The cohesive force of water is due to :

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  2. A higher plant cell covered with cutin and suberin is placed in water....

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  3. Conduction of sap in plants occurs through:

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  4. The blockage of one or two tracheary elements in a tree may cause

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  5. This plant is ideal to demonstrate ascent of sap

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  6. The term ‘tensile strength’ represents that there is

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  7. In a branch cut from a rapidly transpiring plant, water snaps away fro...

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  8. When an oak tree is kept in a poisonous solution, that rises to the to...

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  9. Who among the following scientists first gave the starch sugar interco...

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  10. Chemical reactions are invariably associated with the transfter of ene...

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  11. A chemical widely used as antitranspirant

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  12. Which of the following theory gives the latest explanation for the ope...

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  13. Which one of following is not an antitranspirant?

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  14. Which one of the following will not directly effect transpiration?

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  15. When pheloem is removed by girdling

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  16. Although a girdled (upto bast ) three may survive for sometime , but i...

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  17. How does the removal of a ring of bark and wood from the trunk of a tr...

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  18. When stem of plant is girdled (ringed) :

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  19. Ringing (girdling) experiment cannot be performed in

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  20. The protoplasmic streaming hypothesis for food translocation has not b...

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