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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.
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
Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie
Q. What is inflammation? Inflammation is the initial response of the unspecific defense system versus aggressions against the body the aggressions may be caused by trauma, infe
What is meant by the law of use and disuse and by the law of the transmission of acquired characteristics? As per to the law of use and disuse the characteristics of a body var
Explain about Urinary system Urinary system provides us with the service of disposing the waste products carried by blood. This function is also known as excretion.
Manifestations of Hypertension • Renal Failure • Left Ventricular Failure • Myocardial Infarction • Cerebral Haemorrhage
Q. What are flagella and cilia and how do these structures acquire movement? What are some examples of flagellated and ciliated cells in humans? Flagella and Cilia are structur
What are gonads? What are the male and the female gonads in humans? Gonads are the organs that make gametes. They have the germ cells that undergo division and generate gametes
An adequate level of pressure is needed in the arteries to keep the blood flowing through the cardiovascular system. The chief determinant of arterial pressure is the volume of blo
Define the Prevention of diseases - Function of Vitamin E? Because of its anti-oxidant function and its role in inhibiting cell proliferation of smooth muscles, vitamin E can b
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