Select the incorrect match.

Options

A. `{:("Algae","Use"),("Gelidium","Preparation of ice - creams and jellies"):}`
B. `{:("Algae","Use"),("Spirullina","Used as food suppliments by space travelers"):}`
C. `{:("Algae","Use"),("Chlorella","Used in cough syrups"):}`
D. `{:("Algae","Use"),("Brown algae","As emulsifying agent"):}`

Answer

To solve the question "Select the incorrect match," we need to analyze the given algae and their respective uses. Let's break it down step by step.

### Step 1: Identify the Algae and Their Uses
1. **Gelidium**: Known for being a red algae, it is primarily used to produce agar-agar, which is a solidifying agent in microbiological culture media and is also used in food products like ice creams and jellies.

2. **Spirulina**: This is a cyanobacteria (often referred to as blue-green algae) that is rich in nutrients, particularly omega-3 fatty acids. It is commonly used as a dietary supplement, especially for space travelers.

3. **Chlorella**: A green algae that is recognized for its health benefits, including maintaining blood sugar levels and cholesterol. It is primarily used as a food supplement.

4. **Brown Algae**: These are multicellular algae used in food additives and as emulsifiers, particularly in ice cream to prevent crystallization.

### Step 2: Analyze Each Match
- **Gelidium**: Used in ice creams and jellies - **Correct Match**
- **Spirulina**: Used as a food supplement - **Correct Match**
- **Chlorella**: Used in cough syrups - **Incorrect Match** (Chlorella is not used in cough syrups; it is used as a food supplement.)
- **Brown Algae**: Used as an emulsifying agent - **Correct Match**

### Step 3: Conclusion
Based on the analysis, the incorrect match is the third one: **Chlorella used in cough syrups**.

### Final Answer
The incorrect match is **Chlorella used in cough syrups**.

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