Cartilaginous fish has gill covers.

Answer

To determine whether the statement "Cartilaginous fish has gill covers" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification of Fish**:
- Fish are classified into two main classes: Chondrichthyes and Osteichthyes.
- Chondrichthyes includes cartilaginous fish, while Osteichthyes includes bony fish.

2. **Identify Characteristics of Cartilaginous Fish**:
- Cartilaginous fish, such as sharks, rays, and skates, have skeletons made primarily of cartilage rather than bone.

3. **Understand the Function of Gill Covers**:
- Gill covers, known as operculum, are hard and flexible structures that protect the gills.
- They are involved in the pumping mechanism that helps in the flow of water over the gills.

4. **Determine the Presence of Gill Covers**:
- Gill covers (operculum) are present in bony fish (Osteichthyes) and not in cartilaginous fish (Chondrichthyes).
- Cartilaginous fish do not have gill covers; instead, they have exposed gill slits.

5. **Conclude the Statement**:
- Since cartilaginous fish do not possess gill covers, the statement "Cartilaginous fish has gill covers" is false.

### Final Answer:
The statement "Cartilaginous fish has gill covers" is **False**.

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