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Question
Assertion :Avicennia has pneumatophores. Reason: Pneumatophores help the plant to get oxygen for respiration.
Assertion :Avicennia has pneumatophores. Reason: Pneumatophores help the plant to get oxygen for respiration.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Avicennia is a mangrove plant, the roots of the plant cannot bring about exchange of gases through the soil as the soil is water logged. Therefore, these plants have negatively geotropic roots, growing above the soil perpendicularly called the pnematophores. These roots have openings called lenticels that bring about exchange of gases , that is oxygen and carbon dioxide.So, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'
Avicennia is a mangrove plant, the roots of the plant cannot bring about exchange of gases through the soil as the soil is water logged. Therefore, these plants have negatively geotropic roots, growing above the soil perpendicularly called the pnematophores. These roots have openings called lenticels that bring about exchange of gases , that is oxygen and carbon dioxide.
So, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'
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