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Explain about the Integumentary Tissues?
The skin, hair and nails covering and protecting the body are the intengumentary tissues. Depigmentation of hair and wrinkling of skin (due to alteration in connective tissue composition) is observed with aging. Wound healing becomes slower with age. The dermis of skin where 7-hydroxy cholesterol is converted to cholecalciferol (Vitamin. D) Also decreases with age, thus the older persons require longer exposure to sun to produce the given quantity of the vitamin.
Pollen Tube Structure The pollen tube in the stigma is filled with cytoplasm containing numerous mitochondria and dictyosomes. The number of dictyosome cisternae is reduced i
Define Colorimetric Method - 2, 4 Dinitrophenylhydrazine Method? We shall use this method in estimating vitamin C in a given sample in the laboratory. Here, let us look at the
Definition of old age? The exact timing of the onset of the ageing process cannot be ascertained because the effect of age varies among different individuals. However, the chr
Ecology is divided into two fields: (a)Autecology (b) Synecology (a) Autecology: it deals with life history, population dynamics, behavior etc of a single
VI T AMINS Made up of protein or fat. Vitamins required in minute quantity for normal metabolism and body functions. Vitamins are supposed to be vital amines
What is the typical localization of the tropical forests regarding latitude? Tropical rain forests, as the Amazon forest and the Congo forest, are typically located in low lati
What is the concept of Mesonephric? Replaces the pronephros during development and is retained as functional kidney in adult fish and amphibians. Formed posterior to pronephros
Explain risk factor at the global perspective in heart diease? While the risk of Cardio-vascular diseases has been found to be variable in different ethnic groups with the high
What is commensalism? Commensalism is the ecological interaction in which one individual advantage while the other is neither benefited nor harmed. Commensalism is a harmonious
Q Why in few cases is mitosis a synonym of reproduction? In some living beings asexual reproduction occurs by many means binary division, budding, grafting, schizogony, etc. In
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