Why the name hornworts are given to some bryophytes?

Explanation

### Step-by-Step Solution:

1. **Understanding Hornworts**: Hornworts are a group of bryophytes, which are non-vascular plants. They are part of the plant kingdom and are distinct from other bryophytes like liverworts and mosses.

2. **Characteristics of Hornworts**:
- Hornworts are small in size and lack vascular tissues, which means they do not have specialized structures for transporting water and nutrients.
- They are flowerless and seedless, reproducing through spores instead of seeds.

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