The chemical process involved in the removal of harmful metabolic wastes from the body is called excretion.

Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?

Which of the following statement$(s)$ is (are) correct?
$(i)$ Pyruvate can be converted into ethanol and carbon dioxide by yeast.
$(ii)$ Fermentation takes place in aerobic bacteria.
$(iii)$ Fermentation takes place in mitochondria.
$(iv)$ Fermentation is a form of anaerobic respiration.

Where does digestion of fat take place in our body?

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

Assume that you are a veterinary surgeon and you have removed a significant length of the small intestine of a bear suffering from an intestinal tumour. After its recovery,would you suggest a plant-based or a meat-based diet for the bear? Provide a reason for your answer.