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Ventilation of Tracheal System The manner in which tracheae are ventilated varies with species of insects but movement of air is achieved in two ways: Diffusion
EGESTION To give out undigested food from alimentary canal. Faeces can remain in colon for 36 hrs. then moving into rectum by gastro-colic reflex. Faeces consists of 3
What is the significance of Choanocyte? Unique collar-shaped cells whose flagella are responsible for generating water current in the sponge. As flagella beats, food particles
Exchange of oxygen, nutrients, carbon dioxide and waste products from mother to fetus takes place through diffusion across the: a) Chorionic villi (pron: core-e-on-ick villi)
Explain me the concept with diagram
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LIF E AS AN EXPRESSION OF ENERGY CHANGES - Energy is explained as capacity of body to do work. Energy may be as potential (stored) or kinetic (expended) energy. It ex
Wind Strong current of air is known as wind, it is an important ecological factor as it affects plant life mainly on flat plains, along sea coasts and at high altitudes in moun
Lumpy skin disease The disease, reported from Sudan in 1970 and Egypt in 1988, is caused by a member of the Capripox virus. It affects cattle and is restricted to African coun
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