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Q. How is female gametophyte formed in angiosperms?
Into the flower ovary there are megasporangia enclosed by a tegument having a small opening, the micropyle. Inside the megasporangium there is a megasporocyte, or megaspore mother cell, that undergoes meiosis forming four megaspores of which three regress and only one is functional. The useful megaspore undergoes (three) mitosis generating eight cells that as a whole form the embryonic sac.
What are the phytoplankton and the zooplankton? Phytoplankton and zooplankton are parts of the plankton. The phytoplankton comprises the autotrophic floating beings: cyanobacte
1. Noise producing industries, railway stations, and aerodromes should be located away from the residential areas. 2. Check on the traffic in the residential colonies.
Q. Is water a non-polar or a polar molecule? What is the consequence of that characteristic for the function of water as solvent? Water is made of two atoms of hydrogen attache
Define the effect of niacin deficiency on Skin? Dermatitis is the characteristic feature of the' disease, It is symmetrical in distribution. In early stages, a bright red eryt
Define Proteins as Structural Elements and Structural Units? The liver cell membrane analysis shows that this membrane contains 50-60% protein, 35% lipids and 5% carbohydrates.
Which of the following is a false statement regarding the method of recombination or crossing-over? A. Crossing-over takes place during prophase I of meiosis B. Recombinatio
Define Itraconazole Itraconazole is FDA-approved for treatment of blastomycosis, histoplasmosis (non-meningeal) and aspergillosis in patients who are intolerant of or refractor
Explain Some Functions of Riboflavin? Protective role: Riboflavin protects the octodermal tissues and prevents lesions of the skin, eye and nervous system. Riboflavin amelior
What are the main substances transferred from the mother to the fetus through the placenta? And from the fetus to the mother? From the mother to the fetus the major transferre
Functions of Stomata The cuticle forms outermost surface of the leaf and offers resistance to the evaporation of water vapour and entry of carbon dioxide necessary for photosy
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