Step 1: Understanding the Question:
The question presents an Assertion regarding the factors influencing an organism's mode of reproduction, and a Reason regarding the biological significance of reproduction.
Step 2: Key Concepts and Approach:
We evaluate whether the biological mechanism of reproduction is governed by environmental and physiological factors.
We then analyze if the evolutionary goal of species continuity explains this dependency.
Step 3: Detailed Explanation:
• Assertion (A): There is a large diversity in the biological world, and each organism has evolved its own mechanism to multiply and produce offspring.
An organism's habitat, internal physiology, genetic makeup, and abiotic conditions collectively determine whether it undergoes asexual or sexual reproduction.
Hence, Assertion (A) is correct.
• Reason (R): Reproduction is a fundamental biological process by which living organisms produce young ones similar to themselves.
This process ensures the survival and genetic continuity of the species across successive generations.
Without reproduction, a species would face extinction.
Evolutionary pressures ensure that organisms adapt their reproductive modes to their specific environments and physiology to guarantee this continuity.
Thus, (R) is correct and provides the biological and evolutionary rationale for (A).
Step 4: Final Answer:
Both Assertion (A) and Reason (R) are correct, and Reason (R) is the correct explanation of Assertion (A).