Name the following:
Group of plants having multicellular sex organs surrounded by a sterile jacket.

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a group of plants that have multicellular sex organs surrounded by a sterile jacket.

2. **Identifying the Groups of Plants**: The two main groups of plants that fit this description are Bryophytes and Pteridophytes.

3. **Defining Bryophytes**: Bryophytes are non-vascular plants that include mosses and liverworts. They have multicellular sex organs, which are surrounded by a sterile jacket.

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