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!
Sterility in Angiosperms
Sterility in angiosperms may arise due to several causes. Either the anther may not be formed, or anthers are formed but meiosis may be abnormal.
A. In situations where anthers are not formed, they may take abortive forms and appear like petals or sepals. These conditions are referred to as petaloid and phyllody respectively. There are even cases where anther formation may be suppressed altogether. These cases of pollen sterility have premeiotic determination.
B. There are other examples in which anthers are produced but meiosis is abnormal resulting in the formation of non-viable pollen.
C. Sometimes normal pollen grains are formed but they are not released. This results from failure of anther dehiscence. Such a situation is also described by the term contabiscent anther.
D. Sometimes meiosis is normal but abortion can take place due to premature dissolution of callose. This can occur at any stage during microsporogenesis.
Patient Positioning The patient should be in the left lateral position as this brings the heart into contact with chest wall. The left arm is extended behind the head t
Define Dietary Factors with Antinutritional Effects? In the above sections, we have learnt about a variety of food components having a host of health promotive properties. Let
Q. Meaning of Counselling in diabetes mellitus? The word counselling is a very broad term which is used for helping others to overcome their particular difficulty. It has been
Q. Explain Brachial or Radial Approach ? This technique involves performing the coronary angiogram through the right brachial artery in the right ante-cubital fossa. Usually a
Truffles, morels and the many yeasts that are basic to fermentation processes belong to this group of fungi. These fung are termed as: a) Phycomycetes b) Ascomycetes c)
Explain Glucocorticoids The adrenal cortex secretes the glucocorticoids which increase gluconeogenesis by increasing hepatic intake of amino acids accompanied by increased ac
Explain about the Spinal Trauma? Spinal trauma or spinal cord injury, commonly clue to accidents, fills, sports injury can result in serious disabling consequences. The spinal
SAFETY MEASURES IN THE ADMINISTRATION OF DRUGS It is essential to revise the five "Rights" before administration of medication to the paediatric group. These as you know are:
Normal 0 false false false EN-IN X-NONE X-NONE
Explain detail about the Golgi Bodies Eukaryotic cells possess, within the cytoplasm, a complex organisation of a cluster of membrane-surrounded vesicles called the Golgi bodie
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