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Q. Is the epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this feature an important evolutionary acquisition?
Epithelia are not vascularized capillaries don't directly reach their cells the epithelium exchanges substances by diffusion with the connective tissue situated under it.
Since the epithelia are not vascularized minuscule scratches or skin injuries that happen all the time do not trigger bleeding and do not expose the blood to contamination from external agents this is an important protective strategy discovered by evolution.
Q. Use of Propionates acid in microorganisms? Propionic acid is formed from lactic acid or lactates, as a result of the bacterial action during the manufacturing of swiss chees
i want about superclass pisces
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Q. Define Aortic regurgitation? Aortic regurgitation is a common valvular disease that may present chronically or acutely. Normally the integrity of valve closure depends upon
Trophic structure Organisms in a community are closely interrelated with each other through feeding relationships. Another aspect which is quite obvious in a community is th
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Explain Leaf Primordia ? In contrast to the root, which produces branches from meristematic tissue called the pericycle, shoots have areas of meristematic tissues called nodes
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