Class XII Biology Quiz: Organisms and Populations
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Preview questions
1. What term describes the role and position a species has in its environment?
Habitat · Niche · Biome · Ecosystem
2. Which of the following factors is NOT a density-dependent factor affecting population growth?
Food availability · Predation · Disease · Natural disasters
3. In a predator-prey relationship, what is the primary effect of an increase in the prey population?
Decrease in predator population · Increase in predator population · Stabilization of ecosystem · Decrease in biodiversity
4. Which of the following is an example of a r-selected species?
Elephant · Whale · Cockroach · Giraffe
5. What is the primary characteristic of a K-selected species?
High reproductive rate · Short lifespan · Long gestation period · Rapid population growth
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