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

Show the artificial keys, Q. Show the Artificial Keys? These are based ...

Q. Show the Artificial Keys? These are based on the resemblances and differences of some prominent characters in the taxa. These are based on the phylogenetic relationship b

Explain clinical stigmata of syndromes in heart disease, Explain Clinical s...

Explain Clinical stigmata of specific syndromes in heart disease? Clinical stigmata of specific syndromes: Evidence of preseilce of chromosoinal anomalies or other syndromes

Explain about anterior superior alveolar nerve, Anterior superior alveolar ...

Anterior superior alveolar nerve It is a branch of infraorbital nerve which arises within the infraorbital canal. It gives a nasal branch which passes into nasal cavity to supp

Explain the characteristics of cancer, Explain the Characteristics of Cance...

Explain the Characteristics of Cancer? The important characteristics of cancer are excessive cellular multiplication, invasiveness and autonomy. The active process of invasion

What are the keys for identifying plants and animals, Q. What are the Keys ...

Q. What are the Keys for Identifying plants and animals? Keys are determined as devices to help in identifying plants and animals. These are merely an aid to identification bas

Spermatophores, Spermatophores Many non-chordates do not release free ...

Spermatophores Many non-chordates do not release free sperms during copulation. They have a mechanism to bundle and enclose a number of sperms in a sheath usually made of gela

What do you mean by congenital long qt syndrome, Q. What do you mean by Con...

Q. What do you mean by Congenital Long QT Syndrome? There is a rare group of young patients who suddenly pass out due to a spontaneous ventricular tachycardia and often have fa

What is the constitution of the cartilaginous matrix, Q. What is the consti...

Q. What is the constitution of the cartilaginous matrix? The cartilaginous matrix is made of generally collagen type II, collagen fibers, and of proteoglycans, proteins associa

Explain directly observed therapy of tuberculosis, Directly observed therap...

Directly observed therapy In treating TB, poor adherence to therapy is the most important cause of treatment failure and is associated with emergence of drug resistance. Medica

Y-linked traits in humans, Y-Linked traits in humans Any gene that occu...

Y-Linked traits in humans Any gene that occurs exclusively on the Y chromosome is said to be holandric and it is not expressed in females. Such a Y-linked gene normally occurs

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