In multicellular animals, a group of similar cells along with intercellular substances perform a specific function. Such an organisation is called

Options

A. Tissue
B. Organ
C. Body
D. Organ system

Answer

To answer the question, let's break it down step by step:

### Step 1: Understand the Question
The question asks about a specific organization in multicellular animals where a group of similar cells, along with intercellular substances, perform a specific function.

### Step 2: Identify Key Terms
- **Multicellular Animals**: Organisms made up of more than one cell.
- **Group of Similar Cells**: This suggests a collection of cells that share common characteristics.
- **Intercellular Substances**: These are materials found between cells that help in the functioning of the tissue.
- **Specific Function**: This indicates that the group of cells works together to perform a particular role.

### Step 3: Define the Organization
In biological terms, when a group of similar cells along with intercellular substances come together to perform a specific function, this is referred to as **Tissue**. Tissues are the basic structural units in multicellular organisms.

### Step 4: Differentiate Between Options
- **Tissue**: A group of similar cells performing a specific function.
- **Organ**: A structure made up of different types of tissues working together.
- **Body**: The entire organism composed of various organ systems.
- **Organ System**: A group of organs that work together to perform complex functions.

### Step 5: Conclude the Answer
Based on the definitions and understanding, the correct answer to the question is **Tissue**.

### Final Answer:
In multicellular animals, a group of similar cells along with intercellular substances performing a specific function is called **Tissue**.

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