Gracilaria and Gelidium are important source of

Options

A. Carrageenan jelly
B. Iodine
C. Agar
D. Vitamin B

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms**: Gracilaria and Gelidium are both types of algae. They belong to the class Rhodophyceae, which is commonly known as red algae.

2. **Understand the Importance**: These algae are significant in various commercial applications due to their ability to produce certain substances.

3. **Determine the Substance**: The primary substance derived from Gracilaria and Gelidium is agar. Agar is a gelatinous substance that is used widely in laboratories and food industries.

4. **Applications of Agar**: Agar is utilized for growing microbes in microbiological studies, as well as in the preparation of various food products like ice creams and jellies.

5. **Conclusion**: Therefore, Gracilaria and Gelidium are important sources of agar.

**Final Answer**: Gracilaria and Gelidium are important sources of agar.

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