Fronds are

Options

A. Leaves of ferns
B. Leaves of Cycas
C. Moss roots
D. Reproductive structure of ferns

Answer

**Step-by-Step Text Solution:**

1. **Definition of Fronds**: Fronds are large, expanded, and divided leaves typically found in ferns. They consist of two main parts: the leaf base and the petiole (the stalk that connects the leaf blade to the stem).

2. **Classification of Ferns**: Ferns belong to the group known as pteridophytes. These are vascular plants that reproduce via spores and do not produce seeds. They are classified as terrestrial plants, meaning they primarily grow on land.

3. **Characteristics of Pteridophytes**: Pteridophytes, including ferns, have a well-differentiated body structure, which includes roots, stems, and leaves. The leaves of ferns are specifically referred to as fronds.

4. **Evaluating Options**:
- **Option 1: Leaves of Ferns**: This is correct. The leaves of ferns are indeed called fronds.
- **Option 2: Leaves of Cyclus**: Incorrect. Cyclus is a gymnosperm, and its leaves are not referred to as fronds.
- **Option 3: Moss Roots**: Incorrect. Mosses are bryophytes, and their structures are not called fronds.
- **Option 4: Reproductive Structures of Ferns**: Incorrect. The reproductive structures of ferns are not called fronds; only the leaves are.

5. **Conclusion**: The correct answer is that fronds are the leaves of ferns.