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

Regulation of ammonia assimilation, Regulation of Ammonia Assimilation ...

Regulation of Ammonia Assimilation Heterotrophic bacteria like Escherichia coli and Klebsiella aerogenes induce the operation of GS-glutamate synthase pathway of ammonia assim

For non-insulin users consumption of alcohol, Q. For non-insulin users cons...

Q. For non-insulin users consumption of Alcohol? 1. Substitute for fat calories. A drink providing 100 calories should be substituted by 2 fat exchanges. . 2. Avoid if your

What is the first polar body, Q. What is the first polar body? How differen...

Q. What is the first polar body? How different is it from the oocyte II? In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis and after fini

Qualitative estimation of protein-amino acid content in food, Define Qualit...

Define Qualitative Estimation of Protein/Amino Acid Content in Foods? The protein and amino acid content of foods helps to interpret nutritional differences among foods in term

How can we control the disease cholera, How can we control the disease Chol...

How can we control the disease Cholera Control: Individuals infected  with cholera require oral rehydration therapy  with NaCl plus sucrose, sodium bicarbonate and potassium ch

Explain arterial continuous mummer, Explain arterial continuous mummer? ...

Explain arterial continuous mummer? Arterial Continuous Mummer : These originate in constricted arteries as in carotid or femoral artery obstruction (Mummer are louder in sys

Describe about acyanotic congenital heart disease, Describe about Acyanotic...

Describe about Acyanotic Congenital Heart Disease ? The following lesions will be discussed here: Left to right shunts: Atrial Septal Defect (ASD), Ventricular Septal Defect

Results of mitral valve replacement-mitral valve replacement, Results o...

Results of Mitral Valve Replacement: The risk of mitral valve replacement is reported as 3-5 per cent. It also depends on multiple factors like age, functional clas

Explain the factors on which spoilage of fish depends, Q. Explain the facto...

Q. Explain the factors on which Spoilage of fish depends? i) The type offish. Different types of fish are susceptible to spoilage due to shape and size. A fat fish is suscept

List the four phases of meiosis i, List the four phases of meiosis I, and b...

List the four phases of meiosis I, and briefly explain what occurs during each phase Prophase I: DNA coils into chromosomes, the nucleolus and nuclear envelope disappear, the m

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