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Question

Plants which produce characteristic pneumatophores and show vivipary belong to:


A

Halophytes

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B

Psammophytes

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C

Hydrophytes

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D

Mesophytes

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Solution

The correct option is A

Halophytes


Plants which produce characteristic pneumatophores and show vivipary belong to halophytes. A halophyte is a plant that grows in waters of high salinity.
Pneumatophores are specialized root structures that grow out from the water surface and facilitate the aeration necessary for root. These are adaptations that are shown by mangroves that are found growing in the marshy and saline areas. Saline water has little or no oxygen Which is not conducive for seeds to germinate and establish. To overcome this, mangrove species have a unique way of reproduction, which is generally known as vivipary. In this method of reproduction, seeds germinate and develop into seedlings while the seeds are still attached to the parent tree. These seedlings are normally called as propagules and they photosynthesize while still attached to the mother tree. The parent tree supplies water and necessary nutrients. They are buoyant and float in the water for sometime before rooting themselves on suitable soil.
Psammophytes are plants that thrive in shifting sands, primarily in deserts.
Hydrophytes are plants that have special adaptations for living submerged in water, or at the water's surface.
Mesophytes are plants are terrestrial plants which are adapted to neither a particularly dry nor particularly wet environment.


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