Gametes are non-motile in :-

Options

A. Blue and green Algae
B. Red Algae
C. Both 1 and 2
D. Slime molds

Answer

To determine which organisms have non-motile gametes, we need to analyze the characteristics of the specified groups: blue-green algae, red algae, and slime molds.

### Step-by-Step Solution:

1. **Identify the Groups**: The question refers to blue-green algae, red algae, and slime molds. We need to evaluate the gametes of each group.

2. **Blue-Green Algae**: Blue-green algae (also known as cyanobacteria) reproduce primarily through simple division or fragmentation. They do not have a motile phase in their life cycle, which means their gametes are non-motile.

3. **Red Algae**: Red algae are characterized by their thick gelatinous cell walls and the absence of flagella. They do not produce motile spores or gametes, indicating that their gametes are also non-motile.

4. **Slime Molds**: Slime molds have a complex life cycle that includes both a motile phase (where they can move) and an immotile phase. Therefore, they do not consistently have non-motile gametes.

5. **Conclusion**: Based on the analysis, both blue-green algae and red algae have non-motile gametes. Slime molds do not fit this criterion as they have a motile phase.

6. **Final Answer**: The correct answer is that gametes are non-motile in blue-green algae and red algae.