2. Fill in the blanks.

(i) The blood from the heart is transported to all parts of the body by the ___________ .
(ii) Haemoglobin is present in ___________ cells.
(iii) Arteries and veins are joined by a network of _______________ .
(iv) The rhythmic expansion and contraction of the heart is called _________.
(v) The main excretory product in human beings is ___________ .
(vi) Sweat contains water and ____________ .
(vii) Kidneys eliminate the waste materials in the liquid form called __________.
(viii) Water reaches great heights in the trees because of suction pull caused by _________ .

 

Answers (1)

(i) The blood from the heart is transported to all parts of the body by the arteries.
(ii) Haemoglobin is present in red blood cells.
(iii) Arteries and veins are joined by a network of capillaries.
(iv) The rhythmic expansion and contraction of the heart is called heartbeat.
(v) The main excretory product in human beings is urea .
(vi) Sweat contains water and salt .
(vii) Kidneys eliminate the waste materials in the liquid form called urine.
(viii) Water reaches great heights in the trees because of suction pull caused by transpiration.

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