Biology Assertion (A) & Reason (B) MCQ

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion
Explanation: The earliest organisms that appeared on the earth were non-green and presumably anaerobes as the primordial atmosphere was virtually oxygen-free.

Both A and R are true and R is the correct explanation of A.
Explanation: No energy that is trapped in an organism remains in it forever because the energy trapped by a producer/consumer is either passed to a consumer/secondary consumer or the organism dies.

Both A and R are true and R is the correct explanation of A.
Explanation: Azolla can co-exist with rice plants because it does not interfere with their growth. In some southeast Asian countries, especially China, the rice fields are regularly provided with Azolla. The fern is stocked in a corner of rice field and provided with manure, ash, and straw before transplantation. When the field is flooded at the time of transplantation, the fern spreads rapidly and covers the space in between the rice plants. Anabaena, a blue-green algae resides in the leaf cavities of the fern, It fixes nitrogen. A part of the fixed nitrogen is excreted in the cavities and becomes available to the fern. The decaying fern plants release the same for utilisation by the rice plants.

Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Determining the sex of an unborn child followed by MTP (medical termination of pregnancy) is an illegal practice in many countries, including India. The government has banned the use of prenatal diagnostic techniques to determine the sex of the
unborn child to prevent female feticide.