Assertion. Petromyzon ascends the rivers to spawn.
Reason. It destroys foodfishes.

Petromyzon spawns

Petromyzon spawns

Assertion: Earthworms are the enemy of farmer. Reason: Because they destroy the crop in field.

Assertion: Water waves in a river are not polarized. Reason: Water waves are longitudinal in nature.

Assertion: Water waves in a river are not polarized. Reason: Water waves are longitudinal in nature.

Assertion: Traditional biotechnology is the kitchen technology by using the fermenting bacteria. Reason: There is no scientific validation of these kitchen technologies. (a) Both Assertion and Reason are true. But Reason is the correct explanantion of Assertion. (b) Both Assertion and Reason are true. But Reason is not correct explanation of Assertion. (c) Assertion is true, but reason is false (d) Both Assertion and Reason are false.

Assertion: The heart of cockroach is neurogenic. Reason: The heartbeat rate in cockroach is 49 per minute. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false. (d) If both Assertion and Reason are false.

Assertion: Oxidation of nutrients releases bond energy Reason : Oxidation of nutrients is done by using molecular oxygen. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion (c) If Assertion is true, but Reason is false (d) If both Assertion and Reason are false.