" Respiration "

Assertion . Aerobic respiration is bioenergetically more efficient than anaerobic respiration. Reason. Aerobic respiration takes place in mitochondria whereas anaerobic respiration occurs in the cytoplasm.

Does a hydra respire or breathe or breathe as well as respire or does not respire at all?

Leeches respire through……….while prawns respire through……… .