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How different is the fish epidermis from the amphibian epidermis?
The fish epidermis is very thin and having mucus-secreting cells. The fish skin does not present keratin. The mucus has a protective function and it also helps the sliding of the animal under water. (The fish scales originate from the dermis and not from the epidermis.)
Q. Describe about defecation reflex? An example of a reflex having an autonomic (and somatic) component is the DEFECATION REFLEX: The rectum is generally empty, but when fec
EXAMPLES OF NATURAL SELECTION - 1 . INDUSTRIAL MELANISM - First studied by Fischer & Ford (1845) on pepperd moth (Biston betularia) of two types : grey moth (B.
Explain Systematic - Modern Trends in Animal Taxonomy Systematic is defined as the study of relationship among organisms which means reconstruction of phylogenies. It is that b
MORPHOLOGICAL AND ANATOMICAL EVIDENCES - (i ) HOMOLOGOUS ORGANS - The organs apparently similar or dissimilar in structure and function, but of similar embryonic origi
W A TER Occurence Water is the most abundant substance, covering 70% of earth's surface. It constitutes 60-90% of living cells. 5-6% in tooth e
a) Water demands vary among communities. Discuss some of the factors affecting water uses. b) A coastal town has a resident population of 8000 people during the winter months
Q. What are melanocytes? Melanocytes are epithelial cells of the skin specialized in secretion of melanin and Melanin is a pigment that besides coloring the iris of the eye and
Causes of Degradation of Ecosystem Due to Agriculture Degradation of the ecosystem due to agriculture can be on the following accounts: a) Removal of trees (deforestation
Define effect of dietary fibre expect physiological effects? In addition to all the physiological effects mentioned above, dietary fibre may exert other effects. Acetate and pr
Digestive system of human
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