Agar used to grow microbes and in preparations of ice creams and jellies obtained from :-

Options

A. Gelidium and Gracilaria
B. Spirulina and Oscillatoria
C. Fucus and Polysiphonia
D. Vaucheria and Brown algae

Answer

To determine the source of agar, which is used to grow microbes and in the preparation of ice creams and jellies, we can follow these steps:

### Step-by-Step Solution:

1. **Understand What Agar Is**:
- Agar is a gelatinous substance that is commonly used in microbiology as a culture medium for growing bacteria and fungi. It is also used in the food industry as a thickening agent in products like ice creams and jellies.

2. **Identify the Source of Agar**:
- Agar is derived from certain types of red algae. The most common species from which agar is extracted are **Gelidium** and **Gracilaria**.

3. **Analyze the Options Provided**:
- Option 1: Galladium and Grassy laria
- Option 2: Spirulina and Osteotoria
- Option 3: Yucca and Polyspomia
- Option 4: Aucheria and Gum Aloe Vera

4. **Match the Correct Option**:
- Upon reviewing the options, we see that "Galladium" seems to be a misspelling of "Gelidium," and "Grassy laria" is likely a misspelling of "Gracilaria." Therefore, Option 1 is the closest and correct choice.

5. **Conclusion**:
- The correct answer is **Option 1: Gelidium and Gracilaria**.