In which of the groups of organisms the food material is broken down outside the body and then absorbed ?

Options

A. Mushroom , green plants , Amoeba
B. Yeast, mushroom mould
C. Paramecium ,Amoeba, Cuscuta
D. Cuscuta, lice,tapeworm

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which group of organisms breaks down food material outside their bodies and then absorbs it. This indicates a specific type of nutrition.

2. **Identifying Key Terms**: The key terms here are "broken down outside the body" and "absorbed." This suggests that we are looking for organisms that do not digest food internally.

3. **Analyzing the Options**:
- **Option A**: Mushroom, green plants, and amoeba.
- **Mushroom**: A fungus that decomposes organic matter. Digestion occurs outside the body.
- **Green Plants**: Autotrophs that produce their own food through photosynthesis; they do not digest food externally.
- **Amoeba**: A single-celled organism that digests food internally in a food vacuole.
- **Conclusion**: This option cannot be correct because not all organisms digest food outside their bodies.

- **Option B**: Yeast, mushroom, and bread mold.
- **Yeast**: A type of fungus that ferments sugars and absorbs nutrients externally.
- **Mushroom**: As discussed, it decomposes and absorbs nutrients from decaying matter.
- **Bread Mold (Rhizopus)**: Another fungus that breaks down organic material externally.
- **Conclusion**: All these organisms are saprotrophs, which digest food outside their bodies and then absorb it. This option is a strong candidate.

- **Option C**: Paramecium, amoeba, and cuscuta.
- **Paramecium**: A protozoan that digests food internally.
- **Amoeba**: As noted, it digests food internally.
- **Cuscuta**: A parasitic plant that absorbs nutrients from its host but does not digest food externally.
- **Conclusion**: This option cannot be correct as all organisms digest food internally.

- **Option D**: Cuscuta, lice, and tapeworm.
- **Cuscuta**: Parasitic plant, absorbs nutrients from host.
- **Lice**: Parasites that feed on blood, digesting internally.
- **Tapeworm**: A parasite that absorbs nutrients from the host's intestines.
- **Conclusion**: This option cannot be correct as all organisms digest food internally.

4. **Final Conclusion**: The only group where food material is broken down outside the body and then absorbed is **Option B: Yeast, Mushroom, and Bread Mold**.

**Correct Answer**: Option B (Yeast, Mushroom, and Bread Mold)

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