Each ach nephridium of earthworm opens to the exterior by__________?

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About __________ of the body weight of a mammal is water ?

A. 60% B. 65% C. 70% D. 75%...

The major cell infected by the HIV is lymphocyte ?

A. helper-T B. B C. both T and B D. none of these...

Ecosystem not found in Pakistan is_____________?

A. Tropical rain forest B. Temperate deciduous forest C. Grassland D. Tundra...

An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?

A. Apoenzyme B. Holoenzyme C. Activated enzyme D. Both b and c...

Which Part of the Brain Regulates Body Temperature?

A. cerebellum B. cerebrum C. hypothalamus D. medulla...