Read the statements given below and identify the suitable option :
(i) Eye of Octopus and mammals are homologous.
(ii) sweet potato and potato are analogous.
(iii) Thorus of Bougainville and tendrils of Cucurbita are homologous

Options

A. (i) is true and (ii ) is false
B. (ii) is true and (iii) is false
C. (i) and (ii) both are true
D. (i) is false and (ii) and (iii) true

Answer

To solve the question, we need to analyze each of the three statements given and determine their validity based on the definitions of homologous and analogous structures.

### Step-by-Step Solution:

1. **Analyze Statement (i):**
- **Statement:** Eye of Octopus and mammals are homologous.
- **Analysis:** Homologous structures are those that have a similar anatomical structure but may serve different functions. The eyes of octopus and mammals, however, are structurally different despite both serving the function of vision. Thus, they are not homologous; they are considered analogous structures.
- **Conclusion:** This statement is **false**.

2. **Analyze Statement (ii):**
- **Statement:** Sweet potato and potato are analogous.
- **Analysis:** Sweet potato is a root modification, while potato is a stem modification. Despite their different anatomical structures, they serve a similar function of storing food. Therefore, they are classified as analogous structures.
- **Conclusion:** This statement is **true**.

3. **Analyze Statement (iii):**
- **Statement:** Thorns of Bougainvillea and tendrils of Cucurbita are homologous.
- **Analysis:** Thorns and tendrils may have different functions (protection vs. support), but they share a similar anatomical structure as both are modified stems. Hence, they are considered homologous structures.
- **Conclusion:** This statement is **true**.

4. **Summarize the Results:**
- Statement (i): False
- Statement (ii): True
- Statement (iii): True

5. **Identify the Correct Option:**
- The only option that matches our findings (first is false, second is true, third is true) is **option 4**.

### Final Answer:
The correct option is **option 4**: First is false and Second and Third statements are true.