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प्रश्न
Choose the correct answer:
In ascent of sap water reaches upwards ____________
पर्याय
In the form of a solid column.
in the form of a fragile column.
to some places in the form of solid and to some places in liquid form.
none of the above.
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उत्तर
In ascent of sap water reaches upwards none of the above
APPEARS IN
संबंधित प्रश्न
The process by which root hairs absorb water from the soil.
The diagram given below represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.
The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow :
(i) Name the parts indicated by guidelines ‘1’ to ‘5’
(ii) Is the root hair cell unicellular or multi-cellular?
(iii) Draw a labeled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.
(iv) Name the process responsible for the entry of water molecules from the soil into A1 and then A2.
(v) What pressure is responsible for the movement of water in the direction indicated by arrows?
(vi) How is this pressure set up?
Multiple Choice Question:
The most widely accepted theory for ascent of sap is ______.
Most plant cells and tissues constitutes _____ % water.
What is the composition of an outer layer of root hair?
From which type of cells, root hair is originated
Minerals cannot be passively absorbed by the roots.
Name the following:
Unicellular outgrowths from the epidermis of roots.
