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

Patterns & Mechanisms of Evolution, What types of individuals in a populati...

What types of individuals in a population are represented by the two ends of a bell curve?

Hormones controlling other functions, Hormones Controlling Other Functions ...

Hormones Controlling Other Functions Crustacean's exhibit pronounced capacity for physiological color changes. It is known that the color changing mechanisms in Crustacea are

Embden meyerhof pathway, Anaerobic Oxidation Embden Meyerhof pathway ...

Anaerobic Oxidation Embden Meyerhof pathway The initial  stage of biological oxidiation  includes  a series of nine  main sequential   steps  of reactions  known  as Embd

Nitrogen waste eliminated by beings of the class reptilia, Q. Which is the ...

Q. Which is the kind of nitrogen waste eliminated by beings of the class Reptilia? These beings excrete mainly uric acid this substance is less toxic than ammonia and it can be

.ecology, describe between native and non-native species from the Otay rive...

describe between native and non-native species from the Otay river valley

Determine teenager mindset and the eating disorders, Determine Teenager min...

Determine Teenager mindset and the eating disorders? Self image is an important determinant of weight and figure. Mostly girls under eat as already mentioned earlier, in order

Admission of mentally patient, Admission of Mentally Patient: Volunt...

Admission of Mentally Patient: Voluntary Basis  (Voluntary Admission)   Any adult person who considers himself  to be mentally ill, can  request  the Medical Officer for

Explain cardiac muscle or heart muscle, Explain Cardiac Muscle or heart mus...

Explain Cardiac Muscle or heart muscle? Cardiac muscle, or heart muscle, is a striated muscle that occurs only in the vertebrate heart. The heartbeat is controlled by noncontr

What is class amphibia , What is Class Amphibia ? Class Amphibia take...

What is Class Amphibia ? Class Amphibia takes its name from the Greek words "amphi" and "bios." Amphi means "both sides," or "both types," and bios means "life." This name-bo

Scanning electron microscopy, Scanning Electron Microscopy (SEM) While 'T...

Scanning Electron Microscopy (SEM) While 'TEM is useful to study the internal structul-c of thc ccll. SEM is an important technique if you wish to examine the surl'ace features o

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