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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.
HARD Y - WEINBERG LAW - Proposed by G.H. Hardy and W. Weinberg in 1908 independently. The law states "the frequency of genes or alleles in a population remains constant
Chromosomal Type-Genetic basis of Sex Determination It refers to the condition where the genes involvcd in sex dcterrnincltion arc located on specific chromosomes known as the se
Rhythmic fluctuations in the abundance and activity of cell-cycle control molecules pace the events of the cell cycle. • Kinase - a protein which activates or deactivates another
Define Bitot's Spots - micronutrient deficiencies? As the deficiency progresses, dirty white, foamy and raised spots are formed on the surface of the conjunctiva, generally on
Ur o l it h i a s i s The presence of calculi (urolith) in the urinary system is termed as urolithiasis, and the disease is characterized by distension of bladder and
Modes of NO - 3 reduction Accordingly, there are the following three basic modes of NO - 3 reduction. Directly dependent upon photosynthesis as in cyanobacter
Factors Influencing Lipid Oxidation Food lipids contain a variety of fatty acids that differ in chemical and physical properties and also in their susceptibility to oxidation.
Please help with the following: a) Draw a diagram (showing all the C and H atoms, and their bonds) for a hydrocarbon with 5 carbons with a double bond between carbons 2 and 3.
what do our brain and heart do when we are asleep?
Q. In which nephron portion does the regulation of alkalinity and acidity of the plasma occur? The regulation of the acid-basic equilibrium of the body is done by the kidneys a
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