Fill in the blanks:
(i) The rhythmic expansion and contraction of the heart is called _______.
(ii) The main excretory product in human beings is _____.
(iii) Water reaches great heights in the trees because of the suction pull caused by ______.

Correct Answer:

(i) The rhythmic expansion and contraction of the heart is called heartbeat.

(ii) The main excretory product in human beings is urea.

(iii) Water reaches great heights in the trees because of the suction pull caused by transpiration.

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Updated on: 20-Mar-2023

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