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!
Pollenkitt - Pollen Wall
The lipoidal layer found on the outside of the mature pollen grains of many insect pollinated species is known as the pollenkitt. In addition to lipids it is made up of flavonoids, carotenoids and degeneration products of tapetal proteins. The carotenoids are responsible for its characteristic yellow or orange color. The function of pollenkitt is not clear. It is believed to act as an insect attractant, help in pollen dispersal and in protecting against the damaging effects of UV rays. Deposition o flavonoids appear important for the nod functioning of pollen. In maize it has been shown that the pollen grains that lack flavonoids are incapable of developing tubes that are effective in fertilization. Lipids also help in checking water loss after anther dehiscence and discharge of pollen.
Explain the term Rastelli operations ? This is the operation of choice for transposition with VSD and left ventricular outflow obstruction. The principle of this operation is:
What is the function of vitamin E? In which foods can it be found? Vitamin E, or tocopherol, is a fat-soluble vitamin that participates as coenzyme in the respiratory chain, t
Define the Role of Vitamin A in immune response? Vitamins A is essential to normal immune function and- regulation. As discussed above, during vitamin A deficiency the goblet c
What is Oogenesis ? The female sex cells, or eggs, are formed in the ovaries, the primary sex organs of the female. The precursor of the egg cells, or oogonia, are formed duri
Define the term - Sulphur Sulphur is found in small amounts in soil perhaps 0.15% only. A large part of sulphur used by plants comes from decomposing organic matter or from f
some deliveries of baby occur early na. y is it so?
what are inorganic species
Q. What are the cells that form the cartilaginous tissue? The main cells of the cartilages are the chondrocytes originated from the chondroblasts that secrete the intersticial
Q. Omega-3 Essential Fatty Acids? Omega-3 essential fatty acids found in flax and cold-water fish help fight inflammation. For a condition such as diverticulitis, it may be wis
Is the transportation of gases in tracheophytes made through the vascular tissues? The Carbon dioxide and The Oxygen are not transported through the xylem or phloem. These gase
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