Read the statements given below and identify the suitable option :
(i) Eye of Octopus and mammals are homologous.
(ii) sweet potato and photo 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 statement regarding homologous and analogous organs:

### Step 1: Analyze the First Statement
**Statement (i): Eye of Octopus and mammals are homologous.**
- **Analysis**: The eye of an octopus (a mollusk) and the eye of mammals (vertebrates) do not share a common evolutionary ancestor. They have evolved independently to serve a similar function (vision), which indicates convergent evolution. Therefore, they are analogous, not homologous.
- **Conclusion**: This statement is **false**.

### Step 2: Analyze the Second Statement
**Statement (ii): Sweet potato and potato are analogous.**
- **Analysis**: Sweet potato is a modified root (storage root), while potato is a modified stem (tuber). Despite both being used for food storage, they arise from different structures and origins. This indicates that they are analogous organs.
- **Conclusion**: This statement is **true**.

### Step 3: Analyze the Third Statement
**Statement (iii): Thorns of Bougainvillea and tendrils of Cucurbita are homologous.**
- **Analysis**: Both thorns (from Bougainvillea) and tendrils (from Cucurbita) are modifications of leaves. They have a common origin but serve different functions (protection vs. support). This indicates that they are homologous organs.
- **Conclusion**: This statement is **true**.

### Final Conclusion
- The first statement is false, while the second and third statements are true. Therefore, the suitable option is **D**: 1 is false, but 2 and 3 are true statements.

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