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 will analyze each option provided:

1. **Contractile vacuole**: Linnaeus did not use this feature as a criterion for classification. This is more specific to certain unicellular organisms and was not a part of his classification system.

2. **Body organization**: This was indeed one of the criteria used by Linnaeus. He classified organisms based on their body organization into two main kingdoms: plants and animals. This classification was based on morphological characteristics.

3. **Cell wall**: Linnaeus did not specifically use the presence or absence of a cell wall as a criterion for classification. This characteristic is more relevant to specific groups of organisms, such as plants and fungi, but was not a primary criterion for Linnaeus.

4. **Response to external stimuli**: This was not a criterion used by Linnaeus. His classification did not focus on the behavioral aspects of organisms.

5. **Locomotion**: Linnaeus did not use locomotion as a criterion for classification. His system was more focused on structural and morphological traits rather than how organisms move.

6. **Cell type**: Linnaeus did not classify organisms based on cell type. His classification was primarily morphological and did not delve into cellular structures.

After analyzing all the options, the correct answer is **(b) Body organization**, as it was a criterion used by Linnaeus for classifying living organisms.

### Step-by-Step Solution:
1. Read the question carefully to understand what is being asked.
2. Analyze each option provided in the question.
3. Determine if Linnaeus used each criterion for classification.
4. Identify that the only relevant option is **Body organization**.
5. Conclude that the correct answer is option (b).