Mass Flow Hypothesis
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Munch hypothesis is based on
Translocation of food due to turgor pressure (TP) gradient and imbibition force
Translocation of food due to turgor pressure (TP) gradient
Translocation of food due to imbibition force
None of the above
- root hair and phloem
- phloem and xylem
- root hair and xylem
- leaves and phloem
1. Water diffuses into the sieve tube elements.
2. Leaf cells produce sugar by photosynthesis.
3. Solutes are actively transported into the sieve elements.
4. Sugar is transported from cell to cell in the leaf.
5. Sugar moves down the stem.
- 2 - 4 - 3 - 1 - 5
- 2 - 4 - 1 - 3 - 5
- 1 - 2 - 3 - 5 – 4
- 4 - 2 - 1 - 3 – 5
Munch hypothesis is based on
Translocation of food due to turgor pressure (TP) gradient and imbibition force
Translocation of food due to turgor pressure (TP) gradient
Translocation of food due to imbibition force
None of the above
Sucrose enters a phloem sieve-tube cell because of:
Osmosis
Water potential
Active transport
A process regulated by auxin
Sucrose enters a phloem sieve-tube cell because of:
Osmosis
Water potential
Active transport
A process regulated by auxin
In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Translocation of sugar from source (leaf) to sink is defined as pressure flow hypothesis
Reason: Translocation of the solute is facilitated through living phloem sieve tube cells.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
