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?