Which of the following groups consists of organisms which multiply by fragmentation ?

Options

A. Earthworm, Amoeba, fungi
B. Earthworm, fungi, bacteria
C. Fungi, filamentous algae, protonema of mosses
D. Population of one type

Explanation

To determine which group consists of organisms that multiply by fragmentation, we will analyze each option given in the question.

### Step-by-Step Solution:

1. **Understand Fragmentation**: Fragmentation is a form of asexual reproduction where an organism breaks into fragments, and each fragment can develop into a new organism.

2. **Analyze the Options**:
- **Option 1: Earthworm**: Earthworms reproduce sexually through mating, not by fragmentation. Therefore, this option is incorrect.
- **Option 2: Amoeba**: Amoebas reproduce by binary fission, which is a form of asexual reproduction but not fragmentation. This option is also incorrect.
- **Option 3: Fungi**: Many fungi reproduce asexually through fragmentation. This means that fungi can be part of the correct answer.
- **Option 4: Bacteria**: Bacteria reproduce by binary fission, which is not fragmentation. This option is incorrect.
- **Option 5: Algae**: Certain types of algae can reproduce by fragmentation. This means algae can also be part of the correct answer.
- **Option 6: Mosses**: Mosses can reproduce by fragmentation, particularly through structures like protonema. This means mosses can also be part of the correct answer.

3. **Identify the Correct Group**: The organisms that reproduce by fragmentation include fungi, filamentous algae, and mosses. Therefore, the correct option is the one that lists fungi, filamentous algae, and protonema of mosses.

### Final Answer:
The correct group that consists of organisms which multiply by fragmentation is **fungi, filamentous algae, and protonema of mosses**.

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