An example of a marine angiosperm thriving in shallow seas is

Options

A. Zostera
B. Wolffia
C. Pistia
D. Rhizophora

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for an example of a marine angiosperm that thrives in shallow seas. Angiosperms are flowering plants that have vascular tissues.

2. **Analyzing the Options**:
- **Option A: Jostera**: This is known as seagrass or eelgrass, which is indeed a marine angiosperm that grows in shallow waters. It has roots and vascular tissues, making it suitable for marine environments.
- **Option B: Wolffia**: This is the smallest flowering plant and is free-floating. It does not thrive in shallow seas but rather floats on the surface of water bodies, making it an incorrect choice.
- **Option C: Pistia**: Known as water lettuce, this is also a floating aquatic plant and does not grow in shallow seas. Thus, it is not the correct answer.
- **Option D: Rhizophora**: This is a mangrove plant that typically grows on coastlines and riverbanks, not in shallow seas. Therefore, it is also incorrect.

3. **Conclusion**: After analyzing all the options, the only correct answer is **Jostera**, as it is a marine angiosperm that thrives in shallow seas.

**Final Answer**: Jostera

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