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Question
Assertion : Presence of pneumatophores (the respiratory roots) is a special adaptation of hydrophytes.
Reason: Pneumatophores help to take up oxygen from the atmosphere and transports it into the main roots.
Assertion : Presence of pneumatophores (the respiratory roots) is a special adaptation of hydrophytes.
Reason: Pneumatophores help to take up oxygen from the atmosphere and transports it into the main roots.
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Solution
The correct option is D assertion is incorrect but reason is correct
Presence of pneumatophores (the respiratory roots) is a special adaptation of halophytes and not of hydrophytes. Halophytes are plants of saline environments, which are adapted to grow in high concentration of salt in soil or water. On the other hand, hydrophytes are the plants which remain permanently immersed in water (submerged or partly submerged). Since halophytes are exposed to saline and anaerobic conditions in wetlands, they have developed special adaptation like pneumatophores and vivipary etc. The presence of pneumatophores (the respiratory roots) helps to take up oxygen from the atmosphere and transport it to main roots.
So, the correct answer is D 'Assertion is false but reason is correct'
Presence of pneumatophores (the respiratory roots) is a special adaptation of halophytes and not of hydrophytes. Halophytes are plants of saline environments, which are adapted to grow in high concentration of salt in soil or water. On the other hand, hydrophytes are the plants which remain permanently immersed in water (submerged or partly submerged). Since halophytes are exposed to saline and anaerobic conditions in wetlands, they have developed special adaptation like pneumatophores and vivipary etc. The presence of pneumatophores (the respiratory roots) helps to take up oxygen from the atmosphere and transport it to main roots.
So, the correct answer is D 'Assertion is false but reason is correct'
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