The main plant body is differentiated into true root, stem and leaves in

Options

A. Green algae
B. Bryophytes
C. Blue green algae
D. Pteridophytes

Answer

To determine which group of plants has a main body differentiated into true roots, stems, and leaves, we can analyze the options provided:

1. **Algae**: Algae, particularly green algae, have a thallus-like structure and do not possess true roots, stems, or leaves. They are primarily unicellular or simple multicellular organisms. Hence, this option is incorrect.

2. **Bryophytes**: Bryophytes, such as mosses, are known as the amphibians of the plant kingdom. They have structures that resemble roots (rhizoids), stems, and leaves, but they still have a thallus-like body. Therefore, they do not have true roots, stems, and leaves. This option is also incorrect.

3. **Blue-green algae**: Blue-green algae, or cyanobacteria, are prokaryotic organisms and do not have true roots, stems, or leaves. They are not classified as true plants. Thus, this option is incorrect.

4. **Pteridophytes**: Pteridophytes, such as ferns, are vascular plants that possess true roots, stems, and leaves. They have a well-differentiated plant body and are capable of photosynthesis. They reproduce via spores and are known as cryptogams since they do not produce flowers or seeds. This option is correct.

**Final Answer**: The main plant body is differentiated into true root, stem, and leaves in **Pteridophytes**.