Environmental Studies ยท Biology

Biodiversity and Conservation

2,388 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

Multiple choice

Which of the following is the cause of the extinction crisis?

  1. Habitat loss

  2. Overexploitation

  3. Pollution

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The extinction crisis is caused by a combination of factors, including habitat loss, overexploitation, and pollution. Habitat loss is the destruction of natural habitats, which makes it difficult for plants and animals to survive. Overexploitation is the excessive use of natural resources, which can lead to the decline of populations of plants and animals. Pollution can also lead to the decline of populations of plants and animals because it can make it difficult for them to survive.

Multiple choice

Which human activity is considered a major threat to coral reefs?

  1. Sustainable fishing practices.

  2. Ocean acidification caused by carbon emissions.

  3. Marine protected area establishment.

  4. Responsible coastal development.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ocean acidification, primarily driven by the absorption of carbon dioxide from the atmosphere, poses a significant threat to coral reefs by reducing the availability of carbonate ions necessary for their growth and survival.

Multiple choice

What is the primary cause of species endangerment?

  1. Habitat loss and fragmentation

  2. Climate change

  3. Pollution

  4. Overexploitation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat loss and fragmentation, primarily driven by human activities such as deforestation, urbanization, and agriculture, is the leading cause of species endangerment.

Multiple choice

What is the primary threat to marine species, leading to their endangerment?

  1. Overfishing

  2. Pollution

  3. Climate change

  4. Habitat destruction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Overfishing, the excessive harvesting of fish stocks beyond sustainable levels, is the primary threat to marine species, leading to their endangerment.

Multiple choice

Which plant species is critically endangered due to habitat loss and illegal trade, and is known for its medicinal properties?

  1. Ginseng

  2. Aloe vera

  3. Saffron

  4. Cinchona
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ginseng, a plant species known for its medicinal properties, is critically endangered due to habitat loss and illegal trade.

Multiple choice

What are the main causes of habitat fragmentation?

  1. Natural disasters

  2. Climate change

  3. Human activities

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat fragmentation is primarily caused by human activities such as deforestation, urbanization, and agriculture. Natural disasters and climate change can also contribute to habitat fragmentation, but to a lesser extent.

Multiple choice

What are the consequences of habitat fragmentation for biodiversity?

  1. It can lead to the extinction of species

  2. It can reduce genetic diversity

  3. It can disrupt ecosystem processes

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Habitat fragmentation can have a number of negative consequences for biodiversity, including the extinction of species, the reduction of genetic diversity, and the disruption of ecosystem processes.

Multiple choice

Which species are most vulnerable to habitat fragmentation?

  1. Species with small populations

  2. Species with specialized habitat requirements

  3. Species that are poor dispersers

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Species with small populations, specialized habitat requirements, and poor dispersal abilities are all more vulnerable to habitat fragmentation.

Multiple choice

How does habitat fragmentation affect ecosystem processes?

  1. It can disrupt the flow of energy and nutrients

  2. It can alter the interactions between species

  3. It can reduce the resilience of ecosystems

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Habitat fragmentation can disrupt the flow of energy and nutrients, alter the interactions between species, and reduce the resilience of ecosystems.

Multiple choice

What is the role of habitat fragmentation in the extinction crisis?

  1. It is a major driver of the extinction crisis

  2. It is a minor contributor to the extinction crisis

  3. It is not a factor in the extinction crisis

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat fragmentation is a major driver of the extinction crisis, as it can lead to the extinction of species, the reduction of genetic diversity, and the disruption of ecosystem processes.

Multiple choice

What are some examples of habitat fragmentation?

  1. The construction of a highway through a forest

  2. The development of a new housing subdivision in a rural area

  3. The clearing of land for agriculture

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The construction of a highway through a forest, the development of a new housing subdivision in a rural area, and the clearing of land for agriculture are all examples of habitat fragmentation.

Multiple choice

What are the effects of habitat fragmentation on genetic diversity?

  1. It can reduce genetic diversity

  2. It can increase genetic diversity

  3. It has no effect on genetic diversity

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat fragmentation can reduce genetic diversity by isolating populations of a species and preventing gene flow between them.

Multiple choice

What are the effects of habitat fragmentation on ecosystem services?

  1. It can reduce ecosystem services

  2. It can increase ecosystem services

  3. It has no effect on ecosystem services

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat fragmentation can reduce ecosystem services by disrupting the flow of energy and nutrients, altering the interactions between species, and reducing the resilience of ecosystems.

Multiple choice

What are some challenges to creating and maintaining networks for endangered species?

  1. Habitat fragmentation

  2. Climate change

  3. Invasive species

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Habitat fragmentation, climate change, and invasive species are all challenges to creating and maintaining networks for endangered species. Habitat fragmentation occurs when natural habitats are broken up into smaller and smaller pieces, which can make it difficult for endangered species to move between habitats. Climate change is causing the ranges of many endangered species to shift, which can make it difficult for them to find suitable new habitats. Invasive species can compete with endangered species for resources, such as food and habitat, and can also transmit diseases to endangered species.

Multiple choice

Which of the following is NOT a threat to forest biodiversity?

  1. Habitat loss

  2. Climate change

  3. Invasive species

  4. Overexploitation
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

All of the options listed are threats to forest biodiversity. Habitat loss, climate change, invasive species, and overexploitation can all have negative impacts on forest ecosystems and the species that depend on them.