Pollination, Biology

Assignment Help:

Pollination

Pollination refers to the transfer of pollen from dehiscing anthers to the pistil. Unlike animals, plants cannot move to their mates for sexual reproduction. Hence, they need some external device or agency for the transfer of pollen grains from the male parent to the stigma of the female parent. Exceptionally, in Vallisneria, an aquatic plant, complete male flower may be transported to the female flowers, the physical (wind and water) and biological (insects, birds and bats) agencies promote cross-pollination. The dehiscence of anthers and the transfer of pollen are the prime requirements of pollination.


Related Discussions:- Pollination

Gradient hypohesis, please give me the expansion for ''gradient hypothesis'...

please give me the expansion for ''gradient hypothesis'' and the two types of gradient hypothesis in deelopment of animals in detailed manner

How does consecutive protein production occur in translation, How many of t...

How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does consecutive protein production occur in translation?

Explain cancer and inhibition of tumorigenesis, Explain Cancer and Inhibiti...

Explain Cancer and Inhibition of Tumorigenesis? Polyphenols appear to play a preventive role although the molecular mechanisms of action and applicability to human cancer preve

How could an adult lose billions of cells, How can an adult lose billions o...

How can an adult lose billions of cells from all parts of the body each day and still survive?

Polynephritis in cattle, Polynephritis in cattle Contagious bovine pol...

Polynephritis in cattle Contagious bovine polynephritis is a specific infection of urinary tract of cattle. The causative agent is Corynebacterium renale, a rod shaped gram-po

Heart in mammals, Birds and Mammals - Heart is 4 chambered. 2 au...

Birds and Mammals - Heart is 4 chambered. 2 auricles & 2 ventricles. Sinus venosus & truncus arteriosus absent. Arteriovenous heart. Double circulation i.e. pre

Lymph, LYMPH - Lymph is a mobile connective tissue comprising lymph pla...

LYMPH - Lymph is a mobile connective tissue comprising lymph plasma (fluid) and lymphcorpuscles (cells).   COMPOSITIO N - (i )      Lymph Plasma - It is simil

Muscle cells, explain why it is essential that muscle cells, during anaerob...

explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid(pyruvate) into lactic acid, even though the conversion results in an accumulation

X-linked dominant genes, X-Linked Dominant Genes Dominant X-linked gene...

X-Linked Dominant Genes Dominant X-linked genes are always expressed in both the sexes just as in autosomal traits. One dose of X-linked dominant allele produces its effects in

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