Q. Consider the following statements:

1. A keystone species is a species that dominates its ecosystem in terms of abundance and influence
2. A foundation species is a species that has disproportionately large effect on its environment relative to its population

Which of the above is / are correct?
Answer: Neither 1 nor 2 is correct
Notes: Keystone species, introduced by T. Paine, significantly impact their environment relative to their population, e.g., elephants and tigers. Foundation species, defined by K. Dayton, dominate ecosystems in abundance and influence, such as corals. Indicator species reflect environmental quality, exemplified by lichens. Sentinel species, like honey bees, signal environmental risks to humans.

This question is part of UPSC Daily 20 MCQ Series Course on GKToday Android app.