Tissues are made of:

Options

A. groups of cells that perform a different set of functions
B. collections of cells that perform similar or related functions
C. subcellular structures that aid in the performance of the cell's role
D. none of the above

Explanation

**Step-by-Step Solution:**

1. **Understanding Tissues**: Tissues are defined as a group of cells that work together to perform a specific function. This means that tissues consist of similar types of cells that have a common purpose.

2. **Analyzing Statements**:
- **First Statement**: "Group of cells that perform a different set of functions." This statement is incorrect because tissues are not made up of cells that perform different functions; they are made up of cells that perform similar functions.

- **Second Statement**: "Collection of cells that performs similar or related functions." This statement is correct. It accurately describes what tissues are, as they consist of cells that work together for a common function.

- **Third Statement**: "Subcellular structures that aid in the performance of the cell's role." This statement is incorrect in the context of tissues because it refers to cell organelles, which are structures within cells, not tissues.

- **Fourth Statement**: "None of the above." This option is also incorrect since we have identified the second statement as correct.

3. **Conclusion**: Based on the analysis, the correct definition of tissues is the second statement: "Collection of cells that performs similar or related functions."

**Final Answer**: Tissues are made of a collection of cells that perform similar or related functions.

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