MPSC Rajyaseva 2023 GS Paper 1 — Question 20
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20. काही प्रजाती नष्ट झाल्या तर पर्यावरणावर गंभीर परिणाम करतात त्यांना _______ म्हणतात. Some species if eliminated seriously affect the ecosystem. These are called _______.
a)निळा दगड / Blue stone
b)लाल दगड / Red stone
c)पिवळा दगड / Yellow stone
d)किस्टोन / Keystone✓ Correct
A keystone species is a species that holds together an ecosystem; if removed, the ecosystem undergoes drastic changes or collapses, much like a keystone in an arch.
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