- What is habitat fragmentation?
- A) The expansion of ecosystems
- B) The division of large habitats into smaller, isolated patches
- C) The introduction of invasive species
- D) The migration of species to new regions
- Answer: B) The division of large habitats into smaller, isolated patches
- How does habitat fragmentation affect biodiversity?
- A) It promotes species diversity
- B) It reduces genetic diversity within populations
- C) It has no impact on biodiversity
- D) It helps species adapt to new environments
- Answer: B) It reduces genetic diversity within populations
- What is one of the primary causes of habitat fragmentation?
- A) Natural disasters
- B) Urbanization and agriculture
- C) Climate change
- D) Species migration
- Answer: B) Urbanization and agriculture
- Which of the following is a consequence of habitat fragmentation?
- A) Increase in genetic flow between populations
- B) Decreased competition for resources
- C) Isolation of species populations
- D) Expansion of the species range
- Answer: C) Isolation of species populations
- What term describes the edge of a fragmented habitat?
- A) Core area
- B) Border zone
- C) Ecotone
- D) Edge effect
- Answer: D) Edge effect
- How does the edge effect impact biodiversity?
- A) It increases species diversity in the interior of the habitat
- B) It leads to an increase in predation and competition at the boundaries
- C) It has no significant impact on species
- D) It leads to better resource availability at the edges
- Answer: B) It leads to an increase in predation and competition at the boundaries
- Which species are most likely to suffer from habitat fragmentation?
- A) Migratory species
- B) Generalist species
- C) Specialist species
- D) R-selected species
- Answer: C) Specialist species
- What happens to the gene pool of a species in fragmented habitats?
- A) The gene pool expands due to increased migration
- B) Genetic diversity is maintained
- C) Genetic diversity decreases over time
- D) Gene flow increases significantly
- Answer: C) Genetic diversity decreases over time
- How does habitat fragmentation influence species survival?
- A) It increases survival rates due to fewer predators
- B) It can decrease survival rates due to isolation and inbreeding
- C) It has no impact on survival rates
- D) It increases species migration rates
- Answer: B) It can decrease survival rates due to isolation and inbreeding
- What is a “habitat corridor”?
- A) A road built for animal migration
- B) A strip of habitat that connects fragmented habitats
- C) A barrier that isolates species populations
- D) A large protected area
- Answer: B) A strip of habitat that connects fragmented habitats
- Which of the following can help mitigate the effects of habitat fragmentation?
- A) Increased hunting of species
- B) Habitat restoration and corridor creation
- C) Complete removal of invasive species
- D) Limiting species migration
- Answer: B) Habitat restoration and corridor creation
- What does “isolated populations” mean in the context of habitat fragmentation?
- A) Species from different areas living together
- B) Groups of the same species cut off from each other by barriers
- C) The spread of species across different ecosystems
- D) Species avoiding the boundary areas
- Answer: B) Groups of the same species cut off from each other by barriers
- Which factor is NOT a consequence of habitat fragmentation?
- A) Increased genetic drift
- B) Enhanced adaptability to new environments
- C) Reduced population sizes
- D) Increased risk of extinction
- Answer: B) Enhanced adaptability to new environments
- Which of the following is an effect of smaller habitat patches on species?
- A) Increased resource availability
- B) Increased opportunities for species migration
- C) Decreased population size and increased extinction risk
- D) Decreased competition among species
- Answer: C) Decreased population size and increased extinction risk
- How does habitat fragmentation impact migratory species?
- A) It helps migratory species adapt better to fragmented environments
- B) It limits access to necessary resources for migration
- C) It does not affect migratory species
- D) It promotes the survival of migratory species
- Answer: B) It limits access to necessary resources for migration
- What is the “Allee effect” in relation to habitat fragmentation?
- A) The phenomenon where smaller populations grow faster
- B) The negative impact of low population density on survival and reproduction
- C) The effect of large habitats on species interactions
- D) The increase in birth rates in isolated populations
- Answer: B) The negative impact of low population density on survival and reproduction
- Which group of organisms is most affected by habitat fragmentation?
- A) Cosmopolitan species
- B) Endemic species with limited distribution
- C) Generalist species
- D) R-selected species
- Answer: B) Endemic species with limited distribution
- How does habitat fragmentation contribute to invasive species spread?
- A) It makes habitats less favorable for invasive species
- B) It isolates invasive species from native species
- C) It provides pathways for invasive species to spread
- D) It has no effect on invasive species spread
- Answer: C) It provides pathways for invasive species to spread
- What is a “metapopulation”?
- A) A population of a single species across an entire continent
- B) A set of smaller, isolated populations of the same species
- C) A population that migrates seasonally
- D) A group of unrelated species sharing a habitat
- Answer: B) A set of smaller, isolated populations of the same species
- Which of the following is a long-term effect of habitat fragmentation on species?
- A) Increased migration between habitat patches
- B) Reduced gene flow leading to inbreeding depression
- C) Increased population size
- D) Enhanced ecological resilience
- Answer: B) Reduced gene flow leading to inbreeding depression
- What role do wildlife corridors play in fragmented habitats?
- A) They increase hunting areas for predators
- B) They provide safe passage for animals between habitat patches
- C) They limit animal movement and migration
- D) They discourage species from interacting with one another
- Answer: B) They provide safe passage for animals between habitat patches
- How can human activities contribute to habitat fragmentation?
- A) By maintaining large continuous habitats
- B) By constructing infrastructure like roads and urban areas
- C) By preventing species migration
- D) By conserving large natural areas
- Answer: B) By constructing infrastructure like roads and urban areas
- Which of the following is an example of an ecological effect of habitat fragmentation?
- A) Increased species richness within patches
- B) Disruption of species interactions like predation and pollination
- C) Formation of new ecosystems
- D) Decreased resource competition
- Answer: B) Disruption of species interactions like predation and pollination
- Which of the following best describes the impact of habitat fragmentation on an ecosystem’s function?
- A) It enhances ecosystem productivity
- B) It leads to ecosystem simplification and loss of function
- C) It promotes diverse ecosystem services
- D) It has no impact on ecosystem function
- Answer: B) It leads to ecosystem simplification and loss of function
- What effect does habitat fragmentation have on migration corridors?
- A) It reduces the availability of migration routes
- B) It expands the migration corridors
- C) It encourages species to migrate more
- D) It eliminates the need for migration corridors
- Answer: A) It reduces the availability of migration routes
- What is a key strategy to mitigate the effects of habitat fragmentation?
- A) Increasing hunting of invasive species
- B) Creating and maintaining protected areas and wildlife corridors
- C) Encouraging urbanization in forest areas
- D) Preventing species from migrating
- Answer: B) Creating and maintaining protected areas and wildlife corridors
- What happens to populations when habitat fragmentation leads to isolation?
- A) Populations experience increased genetic diversity
- B) Gene flow is increased between populations
- C) Populations are more resilient to environmental changes
- D) Populations face reduced genetic diversity and higher extinction risk
- Answer: D) Populations face reduced genetic diversity and higher extinction risk
- How does habitat fragmentation influence food chains?
- A) It has no effect on food chains
- B) It makes food chains more stable
- C) It disrupts food chains by isolating species and resources
- D) It strengthens food chains by promoting species diversity
- Answer: C) It disrupts food chains by isolating species and resources
- What is the “area effect” in relation to habitat fragmentation?
- A) Smaller areas support more species
- B) Larger areas support more species and have more stable ecosystems
- C) Larger areas are more prone to fragmentation
- D) Smaller areas become less vulnerable to extinction
- Answer: B) Larger areas support more species and have more stable ecosystems
- What happens to biodiversity when habitat fragmentation occurs?
- A) Biodiversity increases due to more niche spaces
- B) Biodiversity decreases as isolated populations are more vulnerable
- C) Biodiversity remains unaffected
- D) Biodiversity stays constant but shifts to more generalist species
- Answer: B) Biodiversity decreases as isolated populations are more vulnerable
Home Biology Topics with MCQs Ecology MCQs and Answers on “Habitat Fragmentation: Effects on Biodiversity”
MCQs and Answers on “Habitat Fragmentation: Effects on Biodiversity”
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