II. Answer the following questions in an elaborative way
Q16. (a) Draw a diagram of excretory system in human beings and label the following parts:
Ureter and Urethra.
(b) How is urine produced and eliminated?
Q17. (a) Name the organ which performs the following functions in humans:
(i) Absorption of digested food
(ii) Absorption of water,
(b) Name the glands associated with digestion of starch in human digestive tract and mention their role
(c) How is required pH maintained in the stomach and small intestine?
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Answer:
please say the marks mate 2 or 3
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