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15 questions · timed · auto-graded

Question 21 Mark
Name  the following
The process that occurs in plants when the root pressure is high and transpiration is low
Answer
Gutiation
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Question 31 Mark
Name the following
The pressure exerted by the cell wall to balance the torgor pressure
Answer
Wall pressure
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Question 61 Mark
Give the specific function of the following structures:
Stomata
Answer
Stomata help in the exchange of gases in plants. Stomata open and close to allow the intake of carbon dioxide and the release of oxygen during photosynthesis.
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Question 71 Mark
Give the specific function of the following structures:
Root hairs
Answer
Root hairs develop from the epidermis. They increase the surface area for absorption of water and minerals.
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Question 81 Mark
Give the specific function of the following structures:
Phloem
Answer
Phloem helps in the transportation of food from leaves to other parts of the plant.
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Question 91 Mark
Give the specific function of the following structures:
Xylem
Answer
Xylem helps in the conduction and upward movement of water in a plant.
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Question 101 Mark
Define the following terms:
Turgidity
Answer
Turgidity - It is defined as the condition of a cell, when it is kept in water, and it absorbs water through endosmosis and finally reaches such a state that it cannot accommodate more water and it becomes fully stretched or turgid.
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Question 111 Mark
Define the following terms:
Ascent of sap
Answer
Ascent of sap - It is the upward movement of water with dissolved minerals (sap) from roots towards the tip of stem, branches and their leaves.
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Question 121 Mark
Define the following terms:
Turgor pressure
Answer
Turgor Pressure - It is defined as the hydrostatic pressure exerted by the cytoplasm on the cell wall under turgid conditions.
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Question 131 Mark
Define the following terms:
Imbibition
Answer
Imbibition - It is the phenomenon of absorption of water by the dry or semi-dry state of living or dead plants by surface attraction.
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Question 141 Mark
Define the following terms :
Osmosis
Answer
Osmosis - It is a special type of movement of water molecules or solvent from the region of its higher concentration to the region of its lower concentration through a semipermeable membrane.
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Question 151 Mark
Arrange and rewrite the terms in each group in correct order so as to be in a logical order.
1. Soil particles, Cortical cells, Xylem, Root hair
2. Root cap, Xylem, Root tip, Cortex
3. Stoma, Epidermal cell, Endodermis, Guard cell
Answer
1. Soil particles, Root hair, Cortical cells, Xylem
2. Root cap, Root tip, Cortex, Xylem
3. Stoma, Guard cell, Epidermal cell, Endodermis
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Do as Directed. - Biology STD 10 Questions - Vidyadip