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

Define nitrogen estimation - kjeldahl''s method, Define Nitrogen Estimation...

Define Nitrogen Estimation - Kjeldahl's Method? Nitrogen in the protein is estimated by a method referred to as Kjeldahl's method. Although over a period of time many other met

Ascitic fluid collection - specimen collection, Pleural, Pericardial, and A...

Pleural, Pericardial, and Ascitic fluid Collection:      The procedure is called paracentesis . If for pleural cavity is called thoracocentesis , and for pericardial cavity c

What is the structural depiction of a carboxyl group, Q. What is the struct...

Q. What is the structural depiction of a carboxyl group? Carboxyl groups have a carbon attached to one hydroxyl group by a simple bond and one oxygen by a double bond. The othe

Plant water, Plant Water Role of Water in Plants You know that water i...

Plant Water Role of Water in Plants You know that water is the main constituent of plant cells. It performs the following major functions Water as a Solvent Water is a v

What is the plasma membrane of the cell, What is the plasma membrane of the...

What is the plasma membrane of the cell? What are its main functions? The plasma membrane is the outer membrane of the cell; it delimits the cell itself and a cell interior wit

State in brief about gullstrands theory, State in brief about Gullstrands T...

State in brief about Gullstrands Theory A change in the lens is controlled by the balance between elasticity of the lens capsule and the pull of zonules. It is believed that on

Vitamin - d, VITAMIN - D Also known as Calciferol / Anti ricket vit...

VITAMIN - D Also known as Calciferol / Anti ricket vitamin / sun shine vitamin. It is necessary for bones & teeth. It is synthesized in presence of UV rays of sunl

What are the structures that form the external ear, What are the structures...

What are the structures that form the external ear? What is its function? The internal ear comprises the pinna, or auricle, and the auditory canal. Its function is to conduct t

Prospects of meat products, P r o s p ec ts of meat products The ...

P r o s p ec ts of meat products The demand for convenience meat based fast food is ever increasing due to rapid industrialization and urbanization, higher standards of l

Define primary level care - public nutrition, Define Primary Level Care - P...

Define Primary Level Care - Public Nutrition? This is the first level of contact of an individual, the family and the community with the national health system. It is possible

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