Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Anther Dehiscence and Pollen Transfer
Anther Dehiscence
Anther dehiscence simply means the release of pollen grains from dry and mature anthers. It involves the rupturing of anther wall due to the mechanical pressure developed by the fibrous thickenings of endothecial cells along the stomium (the area where mechanical layer does not differentiate). If endothecium is lacking, the mechanical role is passed on to epidermal cells. In most of the angiosperms the stomium is a narrow strip along the entire length of the anther lobe. It may, however, also be restricted to a lid or valve (Berberidaceae) or pores (Solanum, Cassia, Polygala).
Pollen Transfer
The transfer of pollen can be autogamous (self-pollination) in which the pollen grains of an anther reach the stigma of the same flower. In cross-pollination, - the pollen of one plant reach the pistil of some other plant of the same species. If the pollination occurs between two flowers of the same plant it is termed geitonogamy and, if it is between two flowers on different plants it is xenogamy.
assignment help on radiation pollution
Digestion in the Stomach To understand the digestion mechanism in the stomach, it is important to know about the anatomy of the stomach. Look up Unit 6, in the Applied Physio
Q. Most insects have wings. Which is the other animal phylum that contains creatures with analogous organs? Besides the phylum Arthropoda another animal phylum with flying crea
Explain the difference between numerical chromosome abnormalities and single gene disorders. Describe methods of diagnosing chromosome abnormalities prenatally and after birth. How
Define Protective role and Metal chelating ability? Protective role: Nicotinic acid is vital to the normal functioning of the skin intestinal tract and nervous system. It p
What is enzyme kinetics The study of the rate at which an enzyme works is called enzyme kinetics.
Explain Procedure for Determination of the Quality of Milk? 1. Prepare methylene blue solution by dissolving 1 mg methylene blue in 250 ml of sterile distilled water. 2. Aft
Q. What is the name given to conditions in which the own immune system of the individual is the agent of diseases? What are some examples of these conditions? Diseases caused b
In cats, curled ears (Cu) results from an allele that is dominant over an allele for normal ears (cu). Black colour results from an independently assorting allele (G) that is domin
Hazard identification We start the process of risk assessment by first identifying the hazard. The goal of hazard identification is to identification potential adverse hea
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd