Tiny, microscopic plant classified under angiosperms is:

Options

A. Raffiesia
B. Wolfia
C. Pistia
D. Riccia

Answer

To answer the question about the tiny, microscopic plant classified under angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification**: Angiosperms are flowering plants that produce seeds enclosed within a fruit. They are characterized by their ability to reproduce through flowers and seeds.

2. **Identify Characteristics of Microscopic Plants**: We are looking for a plant that is tiny and microscopic in size. This means we need to focus on plants that are significantly smaller than typical plants.

3. **Consider the Options**: The question may provide options, but based on the video transcript, we can infer that there are specific examples of tiny angiosperms mentioned.

4. **Evaluate the Examples**: The transcript mentions that the smallest flowers can be around 0.1mm to 0.2mm in size. This indicates that we are looking for a plant that has very small flowers.

5. **Identify the Correct Plant**: The video suggests that only the second option is correct, which implies that there is a specific plant being referred to. The mention of "Pistia" in the transcript is incorrect as it is classified as a bryophyte, not an angiosperm.

6. **Conclude with the Correct Answer**: Based on the information provided, the tiny, microscopic plant classified under angiosperms is likely to be "Wolffia," which is known to be one of the smallest flowering plants.

### Final Answer:
The tiny, microscopic plant classified under angiosperms is **Wolffia**.