Question

What will happen if instead of 20,000 we have only 15,000 species of birds on Earth?

(a) No threat to the ecosystem

(b) Little threat to the ecosystem

(c) Serious threat to the safety of the ecosystem

(d) Ecosystem remains unchanged

This question was posed to me in an interview for job.

The above asked question is from Importance of Species Diversity to the Ecosystem topic in chapter Biodiversity and Conservation of Biology – Class 12

Answer 1

Right choice is (c) Serious threat to the safety of the ecosystem

The best explanation: An ecosystem consists of biotic and abiotic components that interact within a system. If there is a decrease in the number of bird species, the prey (food that birds eat) and predator (animals eating those specific birds) both will be affected causing serious harm to the safety of the ecosystem.