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!
Gonial Apospory and Somatic Apospory
Gonial Apospory
There is no meiosis. The megaspore mother cell enlarges; a small vacuole appears above and below the nucleus. The cell thus becomes 1-nucleate embryo sac. Three successive mitotic divisions result into an 8-nucleate embryo sac. In Brachycome, the polar nuclei function directly as the first 2 endosperm nuclei.
Somatic Apospory
Meiosis is apparently normal but megaspores play no part in the embryo sac formation. Either during or soon after meiosis one or more sporophytic cells (nucellar or chalazal) enlarge and invade the nucellar lobe destroying and replacing the megaspore. After 3 successive nuclear divisions each such cell becomes differentiated into an aposporic 2n embryo sac with normal organization. Thus, gametophytic generation is completely eliminated.
Define about the Hyponatremia and Hypernatremia? Serum concentration of sodium is normally regulated within the range of 135 to 145 milimole per litre (a). Hyponatremia is defi
CHARACTERISTIC S OF HORMONES - (1) They are regulatory chemicals that control and coordinate functions of different body organs. (2) Hormones are formed by ductle
what is a seed?
The name Joseph Merrick, subject of "The Elephant Man", is generally associated with one disorder, though it now seems likely he actually suffered from a different disorder. Name e
Why are glucorticoids used in transplant patients? Patients with transplanted organs are prone to host versus graft rejection as their own immune system tends to attack the gr
What is the exchange list? IL is a grouping of foods in which specified amounts of all the foods provide approximately equal amount of (the same amount) carbohydrate, protein a
THEOR Y OF EPIGENESIS - It was propounded by C. F. Wolff and supported by Von Baer. According to it, the egg contains the substances which are required in the formation
Q. What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods? The metameric feature that is the body segmentatio
Define the Nutritional shortcomings among the elderly? Nutritional shortcomings are common among the elderly; most often due to poor choice of foods i.e. they may be consuming
Hepaticae (Liverworts) The gametophyte is thalloid body or simple stem and leaves, with aquatic or semi-terrestrial habit. Rhizoids are multiceillular. Some examples : Mar
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