Subject :NSO Class : Class 7
Consider the following statements. Select the option which correctly identifies true (T) and false (F) ones.
(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 everyday.
(iv) Red blood cells are the biconcave, disc shaped structures filled with haemoglobin.
| (i) | (ii) | (iii) | (iv) | |
| A | F | F | T | T |
| B | T | F | T | T |
| C | F | T | T | T |
| D | F | F | T | F |
The correct answer will be A