Pollination, Biology

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.

Posted Date: 1/23/2013 2:18:20 AM | Location : United States







Related Discussions:- Pollination, Assignment Help, Ask Question on Pollination, Get Answer, Expert's Help, Pollination Discussions

Write discussion on Pollination
Your posts are moderated
Related Questions
P l e u r iti s It is the acute or chronic inflammation of the pleural membranes. It is characterized by pain during respiration, pleural effusion, and shallow rapid resp

Excretion in Animals Excretion is concerned along with the removal of metabolic wastes that arise as a result of oxidation of energy rich compounds and metabolism of proteins

Explain Precautions for capsule staining in a culture? 1. Never heat fix the smear. This is because by heating shrinkage can occur which may create a clear zone around the cell

What are the Stages of soil The development of soil takes place in two stages. In the first stage there is formation of parent material which is generally consolidated and cons

difference between one girl and lungs two ribosomes and lysosomes ?

Iron deficiency should be treated with supplemental iron. • Osteoporosis should be treated with calcium and vitamin D supplements. • Depending on individual factors, patien

Define Changes in Tract Minerals - Nutrition during Stress? Changes in the balance of magnesium, phosphate, zinc and potassium follows alterations in nitrogen balance. Iron and

Q. Why doesn't the food enter the trachea instead of going to the esophagus? When food is swallowed the swallow reflex is activated and the larynx closes and elevates to avoid

Q. What do you mean by Borrowed Materials? For the study of as much relevant material as possible the material is obtained on loan. Borrowed specimens benefit the' lending inst

Where in the body is the thyroid gland located? The thyroid is located in the anterior cervical region (frontal neck), in front of the trachea and just below the larynx. It is