In which part of the digestive system is water absorbed?

The correct sequence of anaerobic reactions in yeast is:

Explain holozoic nutrition.

List the three kinds of blood vessels of the human circulatory system and write their functions in tabular form.

How many chambers are present in the heart of fishes? How many times does blood flow through the heart during each cycle?

$(a)$ Name the following:
$(i)$ Part where air is filtered by fine hair and mucus.
$(ii)$ Part which terminates in balloon-like structures.
$(iii)$ Balloon-like structures where exchange of gases takes place.
$(iv)$ Part which separates the chest cavity from the abdominal cavity.
$(b)$ Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?