Gemmae develops are asexual buds in some liverwots, these are `:`

Options

A. Green, unicellular structure with apical bud
B. Achlorophyllous, sessile and multicellular structure
C. Stalked, chlorophyllous multicellular structure
D. Located on the lower surface of thallus in diploid receptacles

Answer

To answer the question regarding the nature of gemmae in liverworts, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding Gemmae**: Gemmae are asexual reproductive structures found in some liverworts. They are responsible for asexual reproduction, allowing the plant to propagate without the need for gametes.

**Hint**: Remember that gemmae are involved in asexual reproduction, which is different from sexual reproduction.

2. **Characteristics of Liverworts**: Liverworts are classified under bryophytes, which also include mosses. They typically have a thallus structure and can reproduce both sexually and asexually.

**Hint**: Bryophytes include both liverworts and mosses, and they have distinct reproductive methods.

3. **Structure of Gemmae**: Gemmae are multicellular structures that are usually green due to the presence of chlorophyll. They are not unicellular, which eliminates options that describe them as such.

**Hint**: Focus on the fact that gemmae are multicellular and contain chlorophyll.

4. **Location of Gemmae**: Gemmae are found in specialized structures called gemma cups, which are located on the thallus of the liverwort.

**Hint**: Gemmae are located in specific structures called gemma cups on the liverwort's thallus.

5. **Correct Option Identification**: Given the options provided, the correct description of gemmae is that they are "stocked chlorophyllous multicellular structures." This aligns with their characteristics as they are multicellular and contain chlorophyll.

**Hint**: Look for options that describe gemmae as multicellular and containing chlorophyll.

### Final Answer:
Gemmae develop as asexual buds in some liverworts, and these are **stocked chlorophyllous multicellular structures**.