Number of plant species known to have become extinct since 1600 AD is

Options

A. 279
B. 384
C. 629
D. 717

Answer

To solve the question regarding the number of plant species known to have become extinct since 1600 AD, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Extinction**:
- Extinction refers to the complete disappearance of a species from the planet. This means that there are no living individuals of that species left.

2. **Identify the Time Frame**:
- The question specifies the time frame since 1600 AD. This is important as it sets the context for the data we are looking for.

3. **Consider the Options Provided**:
- The options given are:
- A) 279
- B) 384
- C) 629
- D) 770

4. **Recall Relevant Information**:
- From the video transcript, it is mentioned that by the year 1680, approximately 384 plant species had become extinct. This suggests that the extinction of plant species has been documented and that 384 is a significant number.

5. **Select the Correct Answer**:
- Based on the information provided in the transcript, the correct answer to the question is **B) 384**.

### Final Answer:
The number of plant species known to have become extinct since 1600 AD is **384**.

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