Environmental Studies · 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

Multiple choice

Which of the following species is most likely to be negatively affected by habitat fragmentation?

  1. Generalist species with high dispersal能力

  2. Specialist species with low dispersal能力

  3. Edge-adapted species

  4. Weedy species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Specialist species with low dispersal能力 are more vulnerable to habitat fragmentation because they are less able to move between habitat patches and adapt to changing environmental conditions.

Multiple choice

Which of the following is NOT a potential consequence of edge effects?

  1. Increased predation

  2. Increased competition

  3. Increased dispersal

  4. Increased habitat connectivity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Edge effects typically lead to decreased habitat connectivity, as the edges of habitat fragments are often less suitable for movement and dispersal of species.

Multiple choice

Which of the following factors is NOT likely to affect dispersal rates in fragmented habitats?

  1. Habitat quality

  2. Distance between habitat fragments

  3. Matrix composition

  4. Climate conditions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Climate conditions are less likely to directly affect dispersal rates in fragmented habitats compared to habitat quality, distance between habitat fragments, and matrix composition.

Multiple choice

What is the primary threat to coral reefs, which are often found within MPAs?

  1. Overfishing

  2. Pollution

  3. Climate change

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

Climate change, particularly rising sea temperatures and ocean acidification, poses a significant threat to coral reefs worldwide, causing coral bleaching and reducing their resilience.

Multiple choice

Which of the following is NOT a potential consequence of climate change for biodiversity?

  1. Loss of habitat

  2. Changes in species distribution

  3. Increased species diversity

  4. Extinction of species
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Climate change is likely to have a negative impact on biodiversity, as it can lead to the loss of habitat, changes in species distribution, and the extinction of species.

Multiple choice

What are some of the threats faced by Indian Mollusks?

  1. Habitat destruction and degradation

  2. Overexploitation and unsustainable harvesting

  3. Pollution and contamination

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

Indian Mollusks face a combination of threats, including habitat destruction, overexploitation, and pollution.

Multiple choice

Which of the following is NOT a benefit of seed dispersal?

  1. Reducing competition among seedlings

  2. Increasing genetic diversity in plant populations

  3. Promoting the spread of invasive species

  4. Enhancing the resilience of ecosystems to environmental changes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

While seed dispersal generally benefits plant populations by reducing competition and increasing genetic diversity, it can also facilitate the spread of invasive species, which can have negative ecological consequences.

Multiple choice

How does seed dispersal contribute to the resilience of ecosystems to environmental changes?

  1. It reduces competition among seedlings for resources

  2. It promotes the spread of invasive species to new areas

  3. It increases the genetic diversity of plant populations

  4. It enhances the ability of ecosystems to adapt to changing environmental conditions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seed dispersal contributes to the resilience of ecosystems by increasing genetic diversity and promoting the colonization of new areas. This genetic diversity allows plant populations to adapt to changing environmental conditions, such as climate change or habitat loss, by providing a pool of genetic variation that can be selected for under new conditions.

Multiple choice

Which of the following is NOT a consequence of reduced pollination services?

  1. Decreased fruit and seed production

  2. Increased genetic diversity in plant populations

  3. Reduced resilience of ecosystems to environmental changes

  4. Loss of habitat for pollinators
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Reduced pollination services can lead to decreased fruit and seed production, reduced resilience of ecosystems, and loss of habitat for pollinators. However, it does not directly lead to increased genetic diversity in plant populations.

Multiple choice

What is the primary threat to pollinators and seed dispersers?

  1. Climate change and habitat loss

  2. Overuse of pesticides and herbicides

  3. Competition from invasive species

  4. Diseases and parasites
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Climate change and habitat loss are considered the primary threats to pollinators and seed dispersers. Climate change can alter the timing of flowering and fruiting, disrupt migration patterns, and reduce the availability of suitable habitats. Habitat loss due to deforestation, urbanization, and agricultural expansion also poses a significant threat to these species.

Multiple choice

What is the most important factor to consider when identifying biodiversity hotspots?

  1. Number of endemic species

  2. Number of threatened species

  3. Level of deforestation

  4. Level of climate change
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The number of endemic species is the most important factor to consider when identifying biodiversity hotspots, as it indicates the level of unique biodiversity in an area.

Multiple choice

Which of these is NOT a major cause of habitat loss?

  1. Deforestation

  2. Urbanization

  3. Climate Change

  4. Volcanic Eruptions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Volcanic eruptions, while they can cause localized habitat loss, are not a major global driver of habitat loss compared to deforestation, urbanization, and climate change.

Multiple choice

Which of these factors is NOT a consequence of habitat loss?

  1. Loss of biodiversity

  2. Increased soil erosion

  3. Improved water quality

  4. Climate change
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat loss typically leads to negative consequences such as loss of biodiversity, increased soil erosion, and climate change. Improved water quality is not a direct consequence of habitat loss.

Multiple choice

Which of these is NOT a characteristic of a biodiversity hotspot?

  1. High concentration of endemic species

  2. High rate of habitat loss

  3. Low species diversity

  4. Unique ecosystems
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biodiversity hotspots are characterized by high species diversity and endemism, not low species diversity.

Multiple choice

Which of the following is a negative impact of invasive species on ecosystems?

  1. Competition with native species for resources.

  2. Predation of native species.

  3. Transmission of diseases to native species.

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

Invasive species can have a range of negative impacts on ecosystems, including competition with native species for resources, predation of native species, transmission of diseases to native species, and alteration of ecosystem structure and function.