Subject :NSO Class : Class 7
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) In cockroaches, air enters the body through spiracles.
(ii) During heavy exercise, we get cramps in the legs due to accumulation of carbon dioxide.
(iii) Normal range of breathing rate per minute in an average adult person at rest is 12-18.
(iv) During exhalation, the ribs move upwards.
| (i) | (ii) | (iii) | (iv) | |
| A | F | T | F | T |
| B | T | T | F | T |
| C | T | F | T | F |
| D | T | T | T | F |
