Question

Which one of the following are at higher risk of extinction due to habitat destruction?

• A. Amphibians
• B. Mammals
• C. Echinoderms
• D. Birds

Hint:

Remember: Amphibians = Environmental indicators → Highly sensitive.

Answer 1

The Correct Option is A

Concept: Certain groups of organisms are more sensitive to environmental changes and habitat destruction.
Step 1: Understanding amphibians.
Amphibians have a dual life (aquatic and terrestrial) and permeable skin, making them highly sensitive to environmental changes.
Step 2: Impact of habitat destruction.
They depend on both land and water habitats, so destruction of either severely affects their survival.
Step 3: Evaluate options.

• Amphibians $\rightarrow$ Highly sensitive and most affected (correct)
• Mammals $\rightarrow$ More adaptable (incorrect)
• Echinoderms $\rightarrow$ Marine, less directly affected (incorrect)
• Birds $\rightarrow$ Can migrate/adapt (incorrect)

Step 4: Conclusion.
Thus, amphibians are at higher risk of extinction due to habitat destruction.