The phenomenon in which seeds germinate and seedlings grow while still...
Allium cepa is onion. Solanum tuberosum is potato, Solanum melongena is Brinjal. The phenomenon given in this question is shown by Mangrove Plants and is known as Vivipary and Rhizophora belongs to that category.
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The phenomenon in which seeds germinate and seedlings grow while still...
Introduction:
The phenomenon described in the question is known as vivipary, which refers to the germination of seeds and growth of seedlings while still attached to the parent plant. This unique reproductive strategy is commonly found in certain plant species, allowing them to ensure the survival and dispersal of their offspring.
Explanation:
Among the given options, the plant species that most commonly exhibits vivipary is Rhizophora, which belongs to the family Rhizophoraceae. Rhizophora is a genus of mangrove trees, commonly known as mangroves, and is found in tropical and subtropical regions worldwide.
Reasons for vivipary in Rhizophora:
1. Mangrove habitats: Rhizophora species are adapted to live in mangrove habitats, which are characterized by brackish water and intertidal zones. These habitats are often challenging for plant survival due to fluctuating water levels, high salinity, and oxygen-deficient soils. Vivipary allows Rhizophora to establish themselves in these harsh environments and ensure the survival of their offspring.
2. Seed dispersal: By germinating and growing while still attached to the parent plant, the seedlings of Rhizophora gain an advantage in dispersal. The mature propagules (developing seedlings) fall from the parent tree into the water during high tides, where they can be carried away by currents and tides to new locations. This method of dispersal increases the chances of finding suitable habitats for establishment and reduces competition with the parent plant.
3. Nutrient availability: Vivipary in Rhizophora allows the developing seedlings to access the rich nutrient resources provided by the parent plant. The parent tree supplies nutrients and oxygen to the growing seedlings through specialized structures called pneumatophores. This nutrient-rich environment enhances the chances of survival and growth of the young seedlings.
4. Adaptations for vivipary: Rhizophora species have several adaptations that enable vivipary. The propagules have a protective outer covering that prevents desiccation and damage during water dispersal. They also possess specialized structures called hypocotyls, which elongate and anchor the seedlings in the substrate upon reaching suitable habitats. These adaptations contribute to the successful establishment of Rhizophora seedlings.
Conclusion:
In conclusion, vivipary is a reproductive strategy commonly observed in Rhizophora species, which are mangrove trees found in tropical and subtropical regions. This unique phenomenon allows the seedlings to germinate and grow while still attached to the parent plant, ensuring their survival and dispersal in challenging mangrove habitats.