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Which of the below terms is used to describe animals which maintain a constant body temperature by producing heat by metabolic oxidations (muscle contractions) and losing excess heat by evaporative cooling?
a) Poikilotherms
b) Homeotherms
c) Heterotherms
d) None of these
ANSWER: B - Homeotherms
Male reproductive system of earthworm: Testis : There are two pairs of testis one on eachside of the body in 10th and 11th segments. They produce sperm mother cells. Seminal Ves
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