CSS - PMS - CCE - PCS - General Science
Biodiversity
Why is biodiversity important to ecosystem resilience?
A. It eliminates competition
B. Greater functional variety can help ecosystems withstand and recover from disturbances
C. It prevents all natural change
D. It guarantees no species ever becomes extinct
Correct Answer: B
Diverse ecosystems often possess functional redundancy and broader response capacity.
CSS - PMS - CCE - PCS - General Science
Biodiversity
What is ex-situ conservation?
A. Maintaining only wild food chains
B. Protecting a forest from logging only
C. Banning rainfall
D. Conserving species outside their natural habitats
Correct Answer: D
Seed banks, botanical gardens and captive breeding are ex-situ approaches.
CSS - PMS - CCE - PCS - General Science
Biodiversity
What is in-situ conservation?
A. Preserving rocks in museums
B. Protecting species in their natural habitats
C. Moving every species to farms
D. Storing all organisms only in laboratories
Correct Answer: B
National parks and wildlife reserves are examples of in-situ conservation.
CSS - PMS - CCE - PCS - General Science
Biodiversity
What is a biodiversity hotspot?
A. A region with exceptional endemic biodiversity that is under major threat
B. A region with constant temperature
C. Any desert with no species
D. An area used only for agriculture
Correct Answer: A
Hotspots combine high endemism with extensive habitat loss.
CSS - PMS - CCE - PCS - General Science
Biodiversity
Which human activity is a major direct driver of biodiversity loss?
A. Natural pollination
B. Photosynthesis
C. Cloud formation
D. Habitat destruction
Correct Answer: D
Habitat conversion and fragmentation are among the leading causes of species decline.
CSS - PMS - CCE - PCS - General Science
Biodiversity
What is an endemic species?
A. A species with no habitat
B. A species found everywhere on Earth
C. A domesticated species only
D. A species naturally restricted to a particular geographic area
Correct Answer: D
Endemic species have limited natural geographic distributions.
CSS - PMS - CCE - PCS - General Science
Biodiversity
Which level refers to the variety of habitats, communities and ecological processes?
A. Atomic diversity
B. Ecosystem diversity
C. Cultural diversity only
D. Protein diversity
Correct Answer: B
Ecosystem diversity includes different ecosystems and ecological interactions.
CSS - PMS - CCE - PCS - General Science
Biodiversity
Which level describes the variety of different species in an area?
A. Species diversity
B. Geological diversity
C. Chemical diversity
D. Genetic diversity only
Correct Answer: A
Species diversity concerns the richness and relative abundance of species.
CSS - PMS - CCE - PCS - General Science
Biodiversity
Which level of biodiversity describes variation in genes within a species?
A. Mineral diversity
B. Ecosystem diversity
C. Atmospheric diversity
D. Genetic diversity
Correct Answer: D
Genetic diversity is variation in inherited genetic information within or among populations.
CSS - PMS - CCE - PCS - General Science
Biodiversity
What does biodiversity refer to?
A. The variety of life at genetic, species and ecosystem levels
B. Only animal body size
C. Only climate zones
D. Only the number of trees
Correct Answer: A
Biodiversity includes variation within species, among species and among ecosystems.