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.
Q. Can you explain Ventricular Tachycardia? The term is usually reserved for at least four or more beats and modified by the term non sustained. Short runs of non-sustained VT
If the titration is done by adding NaOH to a solution containing 2.661 moles of lysine, how many milliliters (mL) of a 5 M solution of NaOH would you have to add to reach point "E"
Define interaction of vitamin c with Nicotinic acid? NAD, NADP and NMN act as constituents of the hydrogen transferring coenzymes in glycolysis, Kreb's cycle and in the oxidati
Chordal Sparing Operation : For sparing both leaflets, an incision is made on the anterior leaflet close to the annulus and then extended centrally and the two segments,
Explain Properties of Natural fats and oils Natural fats and oils vary widely in their physical properties even though they are composed of the same or similar fatty acids. Th
How are radioactive probes useful in DNA fingerprinting? Radioactive probes bind to specific fragments in a DNA sample like a donor gene. A probe can identify which bacteria ha
Q. Which are the two major metabolic gases transported by the blood? The major metabolic gases transported by the blood are molecular carbon dioxide (CO 2 ) and oxygen (O 2 ).
steps in genetic engineering
Trypanosomiasis The trypanosomiasis, also known as African sleeping sickness or Chaga’s disease, is caused by Trypanosoma cruzi, T. gambiense and T. rhodesience. T. evansi cau
Use of Spectinomycin in Pregnancy Spectinomycin (Trobicin) can be used to treat pregnant women allergic to beta-lactam antibiotics, but is unreliable against pharyngeal gonoco
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