UPSC Prelims 2017 · GS Paper 1 · Q21

Environment

Medium · Ecology: Pollinators and Food Webs

Consider the following likely consequences of a sharp decline in butterfly populations:

1. Pollination of certain flowering plants that depend on butterflies would be adversely affected.

2. There would be a marked rise in fungal infections among cultivated plants.

3. Predators such as birds, spiders, and wasps that feed on butterflies would face a reduced food supply.

Which of the statements given above are correct?