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Endothelium - Ovule
In plants bearing unitegmic ovules, the nucellus degenerates during early stages of ovule development and the embryo sac comes in contact with the innermost layer of the integument. The cells of this layer become specialised to supply nutrients to the embryo sac. These cells elongate radially, their cytoplasm becomes dense and store starch and lipids. This specialised layer is called endothelium. Endothelium is also reported in some bitegmic ovules. Tapetal cells are similar to endothelium cells of anther in storing carbohydrates, proteins, RNA, ascorbic acid and other metabolites; it is secretory in function is hence referred to as the integumentary tapetum.
Endocarditis usually occurrs more frequently in men, gender derived ratios range from 1.6 to 2.5. The age specific incidence of endocarditis increased progressively after 30 years
a) What are the advantages of human milk over cows' milk for feeding babies? b) Apart from the composition of the milk, what are the other advantages of breast- feeding?
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Explain Theory of enzyme action L. Michaelis and k L. Menten developed a general theory of enzyme action and kinetics in 1913. According to this theory, we learnt that
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justify the claim that paramecium is the highly evolved protozoan basing on the morphological and physiological features .
Define Sex as a determinants of nutrient requirements? There are some differences in requirements between the two sexes. However, except for iron, these are apparent rather tha
The pumps The blood from the operating field is sucked with the help of the cardiotomy sucker and pump, which is filtered to remove all particulate matter and then pass
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