Transport of food material in higher plants takes place through
Tracheids
Transfusion tissue
Companion cells
Sieve elements
Additional Questions
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The transpiration is regulated by the movements of |
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The osmotic potential and pressure potential of three cells (A, B, C) located in different parts of an actively transpiring plant are given below:
Identify these three cells as root hair, root cortical and leaf mesophyll cells respectively. The correct answer is |
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Passage cells are thin-walled cells found in: |
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When a plant is girdled (ringed) |
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In a plant organ, which is covered by periderm and the stomata are absent, some gaseous exchange still takes place through |
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The relationship among different types of soil water can be summed up by the following equation: |
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Water will be absorbed by root hair when |
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Select the correct events leading to the opening of the stomata a. Decline in guard cell solutes b. Lowering of osmotic potential of guard cells c. Rise in potassium levels in guard cells d. Movement of water from neighbouring cells into guard cells e. Guard cells becoming flaccid |
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Water is lost in a liquid state in some plants through hydathodes. These hydathodes |
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Passive absorption of water by the root system is the result of |
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