Assertion :- The rate of appearance of new forms is liked to the life cycle or the life span of organisms.
Reason :- The organism with short life span have ability to produce more progenies in shorter time and that have chance to more exposure with nature.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is a not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that the rate of appearance of new forms is linked to the life cycle or lifespan of organisms. This implies that organisms with shorter lifespans tend to evolve and produce new forms more rapidly than those with longer lifespans.

2. **Analyzing the Reason:**
- The reason provided states that organisms with shorter lifespans can produce more progeny in a shorter time and have more exposure to nature. This suggests that the rapid reproduction and environmental interactions increase the chances for variation and evolution.

3. **Connecting Assertion and Reason:**
- To evaluate if the reason supports the assertion, we need to consider how shorter lifespans lead to more rapid evolution. Organisms that reproduce quickly can adapt to changes in their environment more swiftly, leading to a higher rate of new forms appearing.

4. **Examples to Support the Argument:**
- Bacteria are a prime example of this concept. They can reproduce rapidly, and even slight changes in their environment can lead to the emergence of new variants. For instance, during the COVID-19 pandemic, the coronavirus showed rapid mutations and variants due to its short generation time.

5. **Conclusion:**
- Both the assertion and the reason are true. The reason correctly explains the assertion, as shorter lifespans lead to quicker reproduction and greater exposure to environmental changes, facilitating the emergence of new forms.

**Final Answer:**
- Both the assertion and the reason are true, and the reason correctly explains the assertion.

---