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LIGHTAll of us know that the sun is the ultimate source of energy for all activities in our biosphere. The electromagnetic radiations from the sun supply energy which warms up the earth and the atmosphere to provide a favourable global temperature for the living organisms. In addition. light plays a variety of roles in the living world. It is essential for photosynthesis, the process by which light is converted into usable chemical energy. It is involved in the transmission of information, for instance, it helps plants and animals to programme their life cycles. coordinates the opening of buds and flowers, dropping of leaves and a variety of other physiological processes. Variation in theamount of light generally affects the local distribution of plants. In animals light regulates reproduction, hibernation and migration and of course makes vision possible. All these biological phenomena are readily influenced by variation in the intensity, and by seasonal or diurnal variations of light.
How many pairs of electrons do the two oxygen atoms in an oxygen molecule share with each other? Explain your answer. The oxygen atoms share two pairs of electrons, sinc
Out of 67,410 randomly selected surgeries tracked in a study in the UK, 2832 were followed by surgical site infections. a. What is the best estimate of the probability of an
Q. Symptoms of hiatus hernia? In most patients, no symptoms are seen. When symptoms do occur, they are: 1. discomfort after heavy meal, 2. Difficulty in breathing while l
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Define the effect of SCFA on Sodium Absorption? SCFAs (short chain fatty acids) have a stimulatory effect on sodium absorption from colonic lumen. The unionized SCFA crosses th
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Q. What are the main human degenerative diseases? The major human degenerative diseases are divided into three groups, neoplastic diseases and degenerative diseases of the nerv
Explain the factor Chromosomal Inheritance? A huge step forward in our understanding of heredity came in 1902, when a biologist named Walter S. Sutton proposed that Mendel's "f
Heteromorphic Types - Intra specific Incompatibility Plants of the same species produce flowers that differ in morphology. This involves two (distyly) or three (tristyly) morp
Define effect on Oestrogens and progesterone in pregnancy? Oestrogens and progesterone are secreted by the placenta from 8-10 weeks of gestation. Progesterone increases through
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