plants which possess seeds but not fruits are

Options

A. bryophytes
B. pteridophytes
C. gymnosperms
D. algae

Answer

To answer the question "plants which possess seeds but not fruits are," we need to analyze the options provided and understand the characteristics of each plant group.

### Step-by-Step Solution:

1. **Identify the Groups of Plants**:
- The options given are bryophytes, pteridophytes, gymnosperms, and algae.
- We need to categorize these groups based on their reproductive structures.

2. **Understand Seed Production**:
- Plants can be broadly divided into two categories based on their reproduction: those that produce seeds and those that produce spores.
- Seed-producing plants include flowering plants (angiosperms) and cone-bearing plants (gymnosperms).

3. **Examine Each Option**:
- **Bryophytes**: These are non-vascular plants like mosses and liverworts. They reproduce via spores and do not produce seeds.
- **Pteridophytes**: This group includes ferns, which also reproduce via spores and do not produce seeds.
- **Algae**: Algae are primarily aquatic and reproduce through spores or vegetative means; they do not produce seeds.
- **Gymnosperms**: This group includes conifers and other plants that produce seeds but do not produce fruits. The seeds are often referred to as "naked seeds" because they are not enclosed in a fruit.

4. **Conclusion**:
- From the analysis, bryophytes, pteridophytes, and algae do not produce seeds. Therefore, they cannot be the correct answer.
- Gymnosperms are the only group that produces seeds but does not produce fruits.

Thus, the correct answer is **gymnosperms**.