| (i) The valve between left and right atrium allow the blood to flow only in one direction. |
| (ii) The contents of phloem can move only in the upward direction whereas water in xylem moves both in the upward and downward directions. |
| (iii) A healthy adult man excretes an; average of 1.5 litres of urine every day. |
| (iv) Red blood cells are the biconcave, disc shaped structures filled with haemoglobin. |
A)
(i)
(ii)
(iii)
(iv)
F
F
T
T
B)
(i)
(ii)
(iii)
(iv)
T
F
T
T
C)
(i)
(ii)
(iii)
(iv)
F
T
T
F
D)
(i)
(ii)
(iii)
(iv)
F
F
T
F
Correct Answer: A
Solution :
There are no valves between left and right atrium. Water in xylem can moves only in the upward direction whereas contents of phloem move in the upward and downward direction.
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