Select the correct option w.r.t criteria used by Linnaeus for classifying living organisms. (a)Contractile vacuole (b)Body organisation (c) Cell wall (d) Response to external stimuli (e) Locomotion (f) Cell type

Options

A. (a),(b),(c),(d),(e)&(f)
B. (a),(b),(c)&(e)
C. (b),(c),(e)&(f)
D. (a),(c),(d)&(e)

Answer

To solve the question regarding the criteria used by Linnaeus for classifying living organisms, we need to analyze each option provided:

1. **Contractile Vacuole (a)**: Linnaeus did consider the presence of contractile vacuoles in organisms as part of his classification criteria. This is correct.

2. **Body Organization (b)**: Linnaeus did not specifically use body organization as a criterion for classification. This option is incorrect.

3. **Cell Wall (c)**: The presence or absence of a cell wall, as well as its composition, was indeed a criterion used by Linnaeus. This is correct.

4. **Response to External Stimuli (d)**: Linnaeus considered whether organisms could respond to external stimuli as a classification criterion. This is correct.

5. **Locomotion (e)**: Linnaeus also took into account the mobility or locomotion of organisms when classifying them. This is correct.

6. **Cell Type (f)**: Linnaeus did not use cell type as a criterion for classification. This option is incorrect.

Based on the analysis, the correct criteria used by Linnaeus for classifying living organisms are:
- Contractile Vacuole (a)
- Cell Wall (c)
- Response to External Stimuli (d)
- Locomotion (e)

Thus, the correct answer is option 4, which includes the criteria A, C, D, and E.

### Summary of the Solution:
- **Correct Criteria**: A (Contractile Vacuole), C (Cell Wall), D (Response to External Stimuli), E (Locomotion)
- **Incorrect Criteria**: B (Body Organization), F (Cell Type)