What is true for slime moulds ?

Options

A. Parasitic, plasmodium with true wall, spores dispersed by air currents
B. Saprophytic, plasmodium without walls, spores dispersed by water
C. Saprophytic, plasmodim without wall spores dispersed by air currents
D. Parasitic, plasmodium without wall spores dispersed by water currents.

Answer

### Step-by-Step Solution:

1. **Identify the Classification**: Slime molds belong to the kingdom Protista. This is important as it helps categorize them correctly within the broader classification of living organisms.

2. **Understand Nutritional Mode**: Slime molds are saprophytic, meaning they feed on dead and decaying organic matter. This characteristic distinguishes them from organisms that perform photosynthesis.

3. **Cell Structure**: Slime molds lack chlorophyll, which means they do not perform photosynthesis. They are surrounded by a plasma membrane but do not have a cell wall, except for the spores, which do have a true cell wall.

4. **Life Cycle Characteristics**: At least one stage in the life cycle of slime molds involves an amoeboid structure known as Plasmodium. This is a key feature that helps in identifying slime molds.

5. **Habitat**: Slime molds are commonly found in moist environments, such as lawns and fields, and they exhibit a wide range of colors.

6. **Reproductive Methods**: Slime molds can reproduce both asexually and sexually, which adds to their versatility as organisms.

7. **Comparison with Other Organisms**: Slime molds share characteristics with both protozoa and true fungi. They exhibit protozoan features while their saprophytic nature aligns them with fungi.

8. **Dispersal of Spores**: The spores of slime molds are dispersed by air currents, not by water, which is another important aspect of their biology.

9. **Conclusion**: Based on the characteristics discussed, the statement that is true for slime molds is that they are saprophytic in mode of nutrition, and they have a plasmodium stage without a wall, with spores dispersed by air currents.

### Final Answer:
The correct statement about slime molds is that they are saprophytic in mode of nutrition, and they have a plasmodium stage without a wall, with spores dispersed by air currents.

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