Which part of the alimentary canal receives bile from the liver?

Why does absorption of digested food occur mainly in the small intestine?

Why is transpiration important for plants?

$(a)$ Draw a diagram of the human urinary system and label the following parts:
$(i)$ Kidney
$(ii)$ Ureter
$(iii)$ Urinary bladder
$(iv)$ Urethra
$(b)$ Name the two major components of normal human urine.

The largest artery is the aorta and the largest vein is the vena cava.

What is the functional difference between the four chambers of the heart?