Environmental Studies ยท Biology
Biodiversity and Conservation
2,266 Questions
Biodiversity and conservation questions address threats to ecosystems, climate change impacts, and habitat loss. These topics are essential for environmental science sections in major competitive exams. Practicing these questions clarifies concepts regarding species extinction and ecological management.
Habitat loss consequencesClimate change impactsEcosystem degradation causesDesert biodiversity threatsForest diversity threatsResource extraction effects
Biodiversity and Conservation Questions
Which of the following is NOT a threat to cultural landscapes?
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Climate change
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Pollution
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Tourism
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War
C
Correct answer
Explanation
Tourism is not a threat to cultural landscapes, as it can help to raise awareness of and support for these sites.
What are the threats to wetlands?
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Pollution
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Climate change
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Land use change
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All of the above
Correct answer
Explanation
Wetlands are threatened by a variety of factors, including pollution, climate change, and land use change.
What is the main cause of coral bleaching?
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Climate change
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Pollution
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Overfishing
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Disease
A
Correct answer
Explanation
Coral bleaching is caused by a rise in ocean temperatures. When the water gets too warm, the coral expels the algae that live in its tissues. This causes the coral to turn white and become more susceptible to disease and death.
What is the main threat to coral reefs in the Caribbean?
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Climate change
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Pollution
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Overfishing
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Disease
C
Correct answer
Explanation
Overfishing is the main threat to coral reefs in the Caribbean. When fish are removed from the reef, it can disrupt the delicate balance of the ecosystem. This can lead to an increase in algae, which can smother the coral and prevent it from getting sunlight.
What is the impact of sea ice loss on Arctic wildlife?
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It benefits Arctic wildlife
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It has no impact on Arctic wildlife
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It negatively impacts Arctic wildlife
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It improves Arctic wildlife's habitat
C
Correct answer
Explanation
The loss of sea ice due to climate change has severe consequences for Arctic wildlife, including polar bears, seals, walruses, and seabirds, as it disrupts their habitat, hunting grounds, and migration routes.
How does ocean acidification impact marine life?
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Coral Bleaching
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Shellfish Weakening
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Fish Population Decline
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All of the Above
D
Correct answer
Explanation
Ocean acidification affects marine life in various ways, including coral bleaching, shellfish weakening, and fish population decline.
What are the long-term effects of coral bleaching?
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Loss of biodiversity
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Damage to coral reefs
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Reduced food security
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All of the above
D
Correct answer
Explanation
Coral bleaching can have a number of long-term effects, including loss of biodiversity, damage to coral reefs, and reduced food security. Coral reefs are home to a wide variety of marine life, and when corals die, it can disrupt the entire ecosystem. Coral reefs also provide food and shelter for many fish species, and when they are damaged, it can reduce the amount of food available for these fish.
What is the impact of human activities on the resilience of desert ecosystems?
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Overgrazing can lead to desertification.
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Unsustainable water extraction can deplete groundwater resources.
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Pollution can contaminate soil and water sources.
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All of the above
D
Correct answer
Explanation
Human activities can negatively impact the resilience of desert ecosystems. Overgrazing can lead to desertification, as vegetation is removed and the soil is exposed to erosion. Unsustainable water extraction can deplete groundwater resources, making water scarce for both humans and wildlife. Pollution from industrial and agricultural activities can contaminate soil and water sources, harming desert organisms.
The concept of 'tragedy of the commons' is associated with:
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The overuse and degradation of common property resources
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The failure of private property rights to protect environmental resources
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The inability of government regulations to control environmental pollution
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The negative impact of economic growth on environmental quality
A
Correct answer
Explanation
The 'tragedy of the commons' refers to the situation where individual incentives to overuse a common resource lead to its depletion or degradation, even if it is collectively beneficial to conserve it.
How does ocean acidification affect marine ecosystems?
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It harms coral reefs and shellfish
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It disrupts the food chain
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It reduces biodiversity
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All of the above
D
Correct answer
Explanation
Ocean acidification harms coral reefs and shellfish, disrupts the food chain, and reduces biodiversity, posing significant threats to marine ecosystems.
What is the main cause of coral bleaching?
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Increased ocean temperatures
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Pollution
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Overfishing
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Habitat destruction
A
Correct answer
Explanation
Coral bleaching is primarily caused by increased ocean temperatures, which stress corals and cause them to expel their symbiotic algae, leading to loss of color and vulnerability to disease.
What are the primary ecological effects of wildfires?
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Loss of biodiversity
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Alteration of ecosystem structure and function
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Release of greenhouse gases
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All of the above
D
Correct answer
Explanation
Wildfires can have a range of ecological effects, including the loss of biodiversity, alteration of ecosystem structure and function, and release of greenhouse gases. Wildfires can kill plants and animals, destroy habitats, and alter the composition and structure of ecosystems. They can also release large amounts of greenhouse gases into the atmosphere, contributing to climate change.
What are some challenges facing wildlife education and interpretation in the 21st century?
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Climate change.
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Habitat loss and fragmentation.
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Invasive species.
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All of the above.
D
Correct answer
Explanation
Climate change, habitat loss and fragmentation, and invasive species are all challenges facing wildlife education and interpretation in the 21st century.
What is the primary mode of introduction of invasive species?
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Natural dispersal
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Human activities
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Climate change
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Habitat destruction
B
Correct answer
Explanation
Invasive species are often introduced through human activities such as trade, travel, and agriculture.
Which of the following is NOT a potential impact of invasive species on native ecosystems?
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Competition for resources
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Predation and herbivory
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Hybridization with native species
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Increased biodiversity
D
Correct answer
Explanation
Invasive species can have a variety of negative impacts on native ecosystems, including competition for resources, predation and herbivory, and hybridization with native species, but they do not typically increase biodiversity.