Which of the following is the incorrect statement regarding animal tissue?

Options

A. Epithelial cells are compactly packed with little intercellular matrix.
B. Tight junctions perform cementing to keep neighbouring cells together .
C. Connective tissue rangas from muscle fibres together and are covered by connective tissue sheath.
D. Cell junctions hold smooth muscle fibres together and are covered by connective tissue sheath.

Answer

To determine the incorrect statement regarding animal tissue, we will analyze each of the four statements provided in the question step by step.

### Step 1: Analyze the First Statement
**Statement:** Epithelial cells are compactly packed with little intercellular matrix.

**Analysis:** Epithelial tissues are indeed characterized by closely packed cells with very little intercellular matrix. They form the lining and covering of organs, and their structure allows them to perform their functions effectively. This statement is **true**.

### Step 2: Analyze the Second Statement
**Statement:** Tight junctions perform cementing to keep neighboring cells together.

**Analysis:** Tight junctions are specialized connections between adjacent cells that prevent the passage of molecules and ions through the space between cells. They effectively "cement" neighboring cells together, maintaining tissue integrity and controlling the movement of substances. This statement is **true**.

### Step 3: Analyze the Third Statement
**Statement:** Connective tissue covers muscle fibers together and is covered by a connective tissue sheath.

**Analysis:** Connective tissues surround and support muscle fibers. The muscle fibers are indeed covered by a connective tissue sheath known as the perimysium, which groups muscle fibers into bundles. This statement is **true**.

### Step 4: Analyze the Fourth Statement
**Statement:** Cell junctions hold smooth muscles together and are covered by connective tissue sheath.

**Analysis:** Smooth muscles do not have traditional cell junctions; instead, they have gap junctions that allow for communication between cells and help in the contraction of muscle fibers. The statement incorrectly refers to "cell junctions" instead of "gap junctions." Therefore, this statement is **false**.

### Conclusion
The incorrect statement regarding animal tissue is the **fourth statement**: "Cell junctions hold smooth muscles together and are covered by connective tissue sheath."

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