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

Autogenic and allogenic succession, Autogenic and Allogenic Succession ...

Autogenic and Allogenic Succession In many cases the living beings of an ecosystem, modify their environment considerably by their growth, death and decay. The changed condit

Define total body potassium (tbk), Define Total Body Potassium (TBK)? ...

Define Total Body Potassium (TBK)? Potassium in the body is an index of body's total cell mass. A gamma counter measures the amount of a type of potassium which is assumed t

Sources of water are to contain pathogenic bacteria, What sources of water ...

What sources of water are (a) most likely, (b) least likely to contain pathogenic bacteria?   (a) Water most likely to have pathogenic bacteria will be that which receives u

State in brief about the zinc, State in brief about the Zinc    It is c...

State in brief about the Zinc    It is concerned with the functioning of sulphydryl compounds, such as cysteine, in regulation of redox potential within the cell. Zinc is somet

What is colloids and suspensions , What is Colloids and Suspensions ? ...

What is Colloids and Suspensions ? Colloids and Suspensions :  Colloids and suspensions are mixtures in which larger particles replace solutes. Colloids, or colloidal suspe

Type specimen of class enteropneusta, Q. Type specimen of class enteropneus...

Q. Type specimen of class enteropneusta? Examine the specimen and note the following features: 1. Balanoglossus has a soft, elongated, worm-like body which has a ciliated surf

Discuss the following term in brief - adaptive radiation, Discuss the follo...

Discuss the following term in brief - Adaptive  radiation Evolution of a variety of different species from a single common ancestor. Each is adapted for a particular niche, and

Describe the term physiotherapy, Describe the term Physiotherapy? Patie...

Describe the term Physiotherapy? Patients who are sedated, intubated and ventilated are not able to deep breathe, cough and clear secretions. Hence, it is important to do chest

Zoology, type study of polystomella

type study of polystomella

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