One angiosperm species is becoming extinct every day in India
is the concept of

Options

A. (a) Whittaker
B. (b) Bentham and Hooker
C. (c) Hutchinson
D. (d) Swaminathan

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question states that one angiosperm species is becoming extinct every day in India and asks for the concept behind this statement.

2. **Identifying the Key Terms**: The key terms in the question are "angiosperm," "extinct," and "India." Angiosperms are flowering plants that produce seeds enclosed within a fruit.

3. **Historical Context**: Angiosperms evolved approximately 125 million years ago during the Late Cretaceous Era. This background helps to understand the diversity and importance of angiosperms in ecosystems.

4. **Causes of Extinction**: The video transcript outlines several causes for the extinction of angiosperms:
- **Habitat Loss and Fragmentation**: Deforestation and urbanization are the primary reasons for habitat loss, leading to a decline in angiosperm species.
- **Introduction of Exotic Species**: Non-native species can outcompete native species, leading to their extinction.
- **Co-extinction**: The extinction of one species can lead to the extinction of another species that is closely related or dependent on it.

5. **Identifying the Concept Originator**: The alarming concept that one angiosperm species is becoming extinct every day in India was given by M. S. Swaminathan, who is recognized as the "father of the green revolution."

6. **Conclusion**: The correct answer to the question is **D. Swaminathan**.