Question

Assertion: Cattle breeds can be improved by superovulation and embryo transplantation.

Reason: Superovulation in high milk-yielding cows is induced by hormonal injection.

Read the assertion and reason statements carefully and answer the question on the basis of the following options.

• A. The assertion is true and the reason is also true; Reason is a correct explanation for Assertion.
• B. The assertion is true and the reason is also true; Reason is NOT a correct explanation for Assertion.
• C. The assertion is true but the reason is false.
• D. The assertion is false but the reason is true.

Answer 1

The correct option is B

The assertion is true and the reason is also true; Reason is NOT a correct explanation for Assertion.

The correct option is B.

Assertion statement:

1. Superovulation and embryo transplantation are two great methods to improve cattle breeds.
2. Superovulation: It is a process utilized to produce embryos for collection and transplant to living recipients, as well as freezing (cryopreservation) of suitable strains for long-term storage.
3. Female animals are artificially made to ovulate more eggs than usual at a predetermined period.
4. Follicular stimulating hormone (FSH) is given to donor cattle twice each day for 3 to 4 days in traditional procedures.
5. Embryo Transplantation (ET): The technique of taking one or more embryos or fertilized eggs from a donor female's reproductive system and transplanting them to one or more recipient females is known as embryo transfer (ET).

So, the assertion statement is correct.

Reason statement:

1. Superovulation and embryo transplantation methods together refer to as Multiple Ovulation Embryo Transfer Technology (MOET).
2. In this approach, a high milk-yielding cow is given hormones with FSH-like activity to induce hyperovulation, which means that instead of producing one egg per cycle, they generate 6-8 eggs.
3. Then the hyper-ovulated cow is either artificially inseminated or mated with an outstanding bull.
4. The fertilized eggs are extracted non-surgically at the 8-32 cell stage and delivered to surrogate mother cows.

So, the reason stated for the assertion is also correct.

Final Answer: (B) The assertion is true, and the reason is also true; Reason is NOT a correct explanation for Assertion.