1. What is biodiversity?
A) Variety of rocks
B) Variety of life forms on Earth
C) Types of soil
D) Types of clouds
Answer: B) Variety of life forms on Earth
2. Which level of biodiversity refers to variation within a species?
A) Species diversity
B) Ecosystem diversity
C) Genetic diversity
D) Habitat diversity
Answer: C) Genetic diversity
3. The term “species richness” refers to:
A) Number of species in an area
B) Size of species
C) Number of individuals
D) Genetic makeup
Answer: A) Number of species in an area
4. Which ecosystem has the highest biodiversity?
A) Desert
B) Tundra
C) Tropical rainforest
D) Polar region
Answer: C) Tropical rainforest
5. A species found only in a particular region is called:
A) Rare species
B) Endangered species
C) Endemic species
D) Exotic species
Answer: C) Endemic species
6. Which of the following is a major threat to biodiversity?
A) Afforestation
B) Habitat destruction
C) Wildlife protection
D) National parks
Answer: B) Habitat destruction
7. The introduction of non-native species is known as:
A) Conservation
B) Extinction
C) Invasive species introduction
D) Evolution
Answer: C) Invasive species introduction
8. Which organization publishes the Red List of Threatened Species?
A) World Health Organization
B) United Nations Educational, Scientific and Cultural Organization
C) International Union for Conservation of Nature
D) Greenpeace
Answer: C) International Union for Conservation of Nature
9. The variety of ecosystems in a region represents:
A) Genetic diversity
B) Species diversity
C) Ecosystem diversity
D) Population diversity
Answer: C) Ecosystem diversity
10. A species that is at risk of extinction is called:
A) Common species
B) Endangered species
C) Dominant species
D) Native species
Answer: B) Endangered species
11. The main cause of species extinction today is:
A) Volcanic eruptions
B) Human activities
C) Earthquakes
D) Ice ages
Answer: B) Human activities
12. Protected areas created to conserve wildlife are called:
A) Industrial zones
B) Sanctuaries
C) Mining areas
D) Urban centers
Answer: B) Sanctuaries
13. Which practice helps conserve biodiversity?
A) Deforestation
B) Overfishing
C) Sustainable development
D) Pollution
Answer: C) Sustainable development
14. Biodiversity hotspots are areas that:
A) Have low rainfall
B) Have high species diversity and are threatened
C) Are cold regions
D) Have no human population
Answer: B) Have high species diversity and are threatened
15. The process by which new species arise is called:
A) Extinction
B) Evolution
C) Migration
D) Adaptation
Answer: B) Evolution
16. Which biome is characterized by very low biodiversity?
A) Coral reef
B) Tropical rainforest
C) Desert
D) Wetland
Answer: C) Desert
17. Ex-situ conservation includes:
A) National parks
B) Wildlife sanctuaries
C) Botanical gardens
D) Forest reserves
Answer: C) Botanical gardens
18. In-situ conservation means:
A) Conserving species in natural habitats
B) Conserving species in zoos
C) Preserving fossils
D) Laboratory experiments
Answer: A) Conserving species in natural habitats
19. Poaching directly affects biodiversity by:
A) Increasing population
B) Protecting species
C) Killing wildlife illegally
D) Improving habitats
Answer: C) Killing wildlife illegally
20. Genetic diversity helps species to:
A) Decrease survival
B) Adapt to environmental changes
C) Reduce population
D) Stop evolution
Answer: B) Adapt to environmental changes
21. The loss of biodiversity can disturb:
A) Food chains
B) Weather only
C) Rock cycle
D) Solar system
Answer: A) Food chains
22. Which of the following is an example of an invasive species impact?
A) Soil formation
B) Native species decline
C) Rainfall increase
D) Temperature decrease
Answer: B) Native species decline
23. The variety of plants and animals in a wetland indicates high:
A) Pollution
B) Biodiversity
C) Erosion
D) Desertification
Answer: B) Biodiversity
24. Which activity reduces biodiversity?
A) Reforestation
B) Wildlife protection laws
C) Urban expansion
D) Sustainable farming
Answer: C) Urban expansion
25. The Convention on Biological Diversity (CBD) was adopted during:
A) Earth Summit 1992
B) Kyoto Protocol
C) Paris Agreement
D) Montreal Protocol
Answer: A) Earth Summit 1992
26. Overexploitation of natural resources leads to:
A) Conservation
B) Extinction of species
C) Ecosystem stability
D) Increased biodiversity
Answer: B) Extinction of species
27. Coral reefs are important because they:
A) Reduce biodiversity
B) Support diverse marine life
C) Increase desert areas
D) Cause pollution
Answer: B) Support diverse marine life
28. Climate change affects biodiversity by:
A) Stabilizing habitats
B) Destroying habitats and altering ecosystems
C) Increasing forest cover
D) Reducing temperature everywhere
Answer: B) Destroying habitats and altering ecosystems
29. A keystone species is one that:
A) Has no effect
B) Plays a critical role in ecosystem balance
C) Is always large
D) Lives in deserts only
Answer: B) Plays a critical role in ecosystem balance
30. Sustainable use of biodiversity ensures:
A) Resource depletion
B) Long-term environmental balance
C) Immediate extinction
D) Habitat loss
Answer: B) Long-term environmental balance