Vivipary - development biology, Biology

Assignment Help:

Vivipary - Development Biology

In flowering plants the seed or fruit generally is dispersed and germination occurs when the conditions are congenial for growth. However, in some plants growing along the sea shores or in mangrove areas the soil is too saline or salty for seed germination. Moreover, in such places the seed and the young seedlings are likely to get washed away by the tide. Mangrove plants (e.g., Rhizophora spp.) have, therefore, evolved a unique adaptation for ensuring seed germination and nurturing of the young sporophyte.

The young seedling grows out of the intact fruit and hangs with its pointed radicular end facing downward. Once the seedling attains a large size it drops down and penetrates the soil. Roots are produced rapidly by the radicle and the seedling is fixed firmly in the soil. By this time the seedling would have developed an extensive photosynthetic tissue to ensure its establishment and has been compared to the similar state observed in mammals. Certain bamboos and forest trees also practice vivipary. This mechanism of rearing the young one by the parent is termed vivipary. It is a specialized characteristic evolved by mangrove plants as a strategy for survival.


Related Discussions:- Vivipary - development biology

Feline leukemia, Feline leukemia The disease is caused by a retrovirus and...

Feline leukemia The disease is caused by a retrovirus and is the most common naturally occurring lymphosarcoma and accounts for nearly 30% of feline tumors. Based on the location

Enumerate about the luria nebraska battery, Enumerate about the Luria Nebra...

Enumerate about the Luria Nebraska battery Luria Nebraska battery will be based on the assumption that the only connecting link between Luria and that procedure is the set of

Role of echocardiography, Echocardiography is a very important tool in diag...

Echocardiography is a very important tool in diagnosis of cardiovascular diseases and is used  virtually in all categories of cardiovascular diseases. There are certain areas where

Explain about the cardiovascular and circulatory system, Explain about the ...

Explain about the Cardiovascular and Circulatory System? Aging affects the cardiac muscle causing a diminished resting cardiac output. The capacity of myocardium for cellula

Platyhelminthes - regeneration in invertebrates, Platyhelminthes (Flatworms...

Platyhelminthes (Flatworms) - Regeneration in Invertebrates Between flatworms the turbellarians, (mostly fresh water species and fresh water and terrestrial triclads) routinel

Post removal technique using prs kit, Post removal Technique using PRS kit ...

Post removal Technique using PRS kit -Transmetal efficiently doming the post head . -Select suitable sized trephine . -Place drop of RC prep on the post head as lubrican

Why degree of dispersion of protein solution is decreased, Degree of disper...

Degree of dispersion of protein solution is decreased. It is decreased because of certain reasons:- Association: refers to changes occuring at subunit or molecular leve

Guards for machines and equipment, Guards for Machines and Equipment ...

Guards for Machines and Equipment Various machines and equipment used for manufacturing require guards for protecting the operator from any injury. These machines include: Wo

Heterotrophic nutrition, heterotrophic nutrition in any 5 type...

heterotrophic nutrition in any 5 types of organism

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd