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Cohesion theory of water movement in plants was put forth by

Henry Dixon
F. F. Blackman
Melvin cycle
Hans. A. Krebs
Additional Questions

Study the following table showing the components of water potential in closely arranged mesophyll cells namely A, B and C.

CellOsmotic Potential (MPa)Pressure Potential (MPa)
A– 0.210.05
B– 0.220.02
C– 0.230.05

Identify two of the following which show correct direction of water movement between two cells.
I. A → B
II. B → C
III. C → A
IV. C → B
The correct pair is

Answer

Stomata open is due to accumulation of

Answer

Which of the following is the most accepted theory for movement of water through plants?

Answer

Assertion:When dried seeds of pea are placed in a tin and water added up to their upper level and then a lid is put lightly over it. Within an hour, the lid will be blown off.

Reason: Due to rapid cell division in pea seeds.

Answer

Attraction of water molecules to polar surfaces is known as

Answer

Which of the following is not a purpose of transpiration?

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When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of

Answer

Guard cells help in

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Which one of the following denotes the water potential of the mesophyll cell in wilted condition?

Answer

Identify the correct relationship with reference to water potential of a plant cell.

Answer
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