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Statement 1: |
All the endodermal cells of the root do not contain Casparian thickenings on their radial and transverse walls. |
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Statement 2: |
Passage cells are found in the root endodermis. |
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a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
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b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
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c) |
Statement 1 is True, Statement 2 is False |
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d) |
Statement 1 is False, Statement 2 is True |
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Statement 1: |
All the endodermal cells of the root do not contain Casparian thickenings on their radial and transverse walls. |
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Statement 2: |
Passage cells are found in the root endodermis. |
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a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
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b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
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c) |
Statement 1 is True, Statement 2 is False |
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d) |
Statement 1 is False, Statement 2 is True |
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(b) The characteristic feature of endodermal cells of roots is the presence of Casparian thickenings on their radial and transverse walls but all cells of endodermis do not have Casparian thickenings instead they have simple permeable cell wall. Those cells are called passage cells, which remain in contact with the protoxylem cells. Passage cells provide route for the movement of water from cortex to xylem. Parenchyma consists of mainly thin walled cells which are made up of cellulose. Its main function is storage of food. |