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.
For the article entitled "The inner life of the genome" which of the following is true? A. Individual chromosomes occupy explained territories within the nucleus. B. The spe
Explain the Protein Energy Malnutrition (PEM)? Protein Energy Malnutrition (PEM) is the deficiency of macronutrients or energy and protein in the diet and forms the most import
Explain Fosamprenavir calcium It is a prodrug of amprenavir, was recently approved by the FDA for use in HAART. In patients who have not lastly been treated with a protease inh
DISORDER S OF THE GONADS Hypogonadism. Inadequate gonadal function is called hypogonadism. It is due to defects in, or injury to the hypothalamus, the pituitary gland, of th
Sphaerosome Also known as Plant lysosome , because they contain hydrolytic enzymes. Hanstei n first observed them and called microsomes . Discovered by Dangeared
in the oneward form
Early campaigns of the 19th century that focused on sanitation, hygiene, housing, and nutrition had little effect in controlling communicable disease due to flawed rationale based
Together, genomics, proteomics and transcriptomics are influential approaches to enhancing our understanding not only of how cells function normally but also what the key modificat
Animals of the open water zone The limnetic region of this zone contains certain fishes as well as rotifers, zooplankton such as crustacean and protozoan. In the profundal zo
What is the epidemiological association between hemophilia and HIV infection? As hemophilic patients need frequent transfusions of clotting factors (VIII or IX) they are more s
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