Percentage of global photosynthesis performed by photosynthetic protista is

Options

A. `30%`
B. `50%`
C. `65%`
D. `80%`

Answer

To determine the percentage of global photosynthesis performed by photosynthetic protista, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of Photosynthetic Protista**:
- Photosynthetic protista, which include organisms such as diatoms, dinoflagellates, and various types of algae, are capable of performing photosynthesis. This process allows them to convert sunlight into energy and produce oxygen as a byproduct.

2. **Identify the Contribution to Global Photosynthesis**:
- It is important to recognize that these protists contribute significantly to the overall photosynthetic activity on Earth.

3. **Review the Options Provided**:
- The options given for the percentage of global photosynthesis performed by photosynthetic protista are 30%, 50%, 65%, and 80%.

4. **Recall Relevant Information**:
- From biological studies, it has been established that photosynthetic protista are responsible for a substantial portion of global photosynthesis.

5. **Conclude with the Correct Answer**:
- Based on the information, it is noted that nearly 80% of global photosynthesis is performed by photosynthetic protista. Therefore, the correct answer is **80%**.

### Final Answer:
The percentage of global photosynthesis performed by photosynthetic protista is **80%**.

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