Environmental Studies · 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 zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Which of the following is responsible for the extinction of wildlife?

  1. Hunting

  2. Destruction of habitats

  3. Pollution of air and water

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

The important causes of biodiversity losses or species extinctions, that the world is facing now, are largely due to human activities. There are four major causes -
(i) Habitat loss and fragmentation (includes deforestation and pollution).
(ii) Over-exploitation (includes hunting, fishing and other such activities).
(iii) Alien species invasions.
(iv) Co-extinctions.

Thus, the correct answer is option D.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

The factor that destroys plant biodiversity is

  1. Biosphere reserves

  2. Vulnerable ecosystems

  3. Inaccessibility of habitats

  4. Destruction of habitats
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The factor that destroys plant biodiversity is destruction of habitats, wildlife species get extinct because of destruction of forest by deforestation.

So, the correct answer is 'Destruction of habitats'

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Extinction of numerous wild animals is due to

  1. Hunting

  2. Deforestation

  3. Overcrowding

  4. Scarcity of food
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deforestation refers to destruction of forest by extensive cutting of trees, since wild animals live in forests, they lose their habitat which leads to extinction of species

So, the correct answer is 'Deforestation'

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Bald Eagle had been at high risk of extinction due to its

  1. Large size

  2. Low reproductive potential

  3. High trophic level

  4. Change in migratory route
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, and position at a higher trophic level favour extinction.
So, the correct answer is 'High trophic level'.
Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Susceptibility to extinction is due to

  1. Large body size

  2. Small population

  3. High trophic level

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

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population and position at a higher trophic level favour extinction.

So, the correct answer is 'All of the above'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Plant species on verge of extinction due to over-exploitation is

  1. <p>Centella</p>

  2. <p>Podophyllum</p>

  3. <p>Gloriosa</p>

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

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. A decrease in the species diversity progresses to extinction if left uncontrolled. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as over-exploitation, large body size, small population, massive habitat loss and position at a higher trophic level favor extinction. A plant podophyllum is at the verge of extinction due to over-exploitation. So, the correct answer is 'Podophyllum'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Which is mainly responsible for extinction of wildlife?

  1. Hunting of flesh

  2. Destruction of habitats

  3. Pollution of air and water

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

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, massive habitat loss and position at a higher trophic level favor extinction. As forests are the main habitat for the wild animals, their loss favors the extinction of the same.

So, the correct answer is 'Destruction of habitats'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Habitat loss and fragmentation, over-exploitation, alien species invasion and co-extinction are causes for

  1. Population explosion

  2. Biodiversity loss

  3. Migration pollution

  4. Ecological succession
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biodiversity loss leads to the extinction of species. Factors such as habitat loss and fragmentation, over-exploitation, alien species invasion and co-extinction are causes for such losses. When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution.
So, the correct answer is 'Biodiversity loss'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Most of the endangered species are victims of 

  1. Acid rain

  2. Competition with introduced species

  3. Habitat destruction

  4. Over-hunting
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Endangered species are prone to become extinct. When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, massive habitat loss and position at a higher trophic level favor extinction. As forests are the main habitat for the wild animals, their loss favors the extinction of the same.

So, the correct answer is 'Habitat destruction'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Which of the following is a result of habitat destruction, poaching, climate change and lack of resource management?

  1. Decline in biodiversity

  2. Decline of selection pressure

  3. Decline in natural resources

  4. Increase of green-house effect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat destruction, poaching, climate change and lack of resource management have resulted in a decline in biodiversity by leading to the extinction of species. Other factors such as large body size, small population, and position at a higher trophic level also favor extinction of species. When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out.

So, the correct answer is 'Decline in biodiversity'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Which of the following is the most important cause of animals and plants being driven to extinction?

  1. Co-extinctions

  2. Over-exploitation

  3. Alien species invasion

  4. Habitat loss and fragmentation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. 

  • The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. 

  • Factors such as large body size, habitat loss, and fragmentation (a most important factor), small population and position at a higher trophic level favor extinction.

So, the correct answer is 'Habitat loss and fragmentation'.

Multiple choice zoology biodiversity, classification and conservation biodiversity losses biodiversity loss and need for conservation environmental conservation and biodiversity

Which among the following is mainly responsible for the extinction of wildlife? 

  1. Pollution of air and water

  2. Hunting for flesh

  3. Destruction of habitat

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

Wildlife is an asset for our environment. It needs to be protected to maintain an optimum biodiversity. Some of the reasons for extinction of wild life are:

Destruction of their natural habitats by environmental pollution, deforestation, soil erosion, overgrazing, increased urbanization, forest fires, and developmental works.
Over exploitation of the natural resource, that is pollution of air and water.
Indiscriminate hunting that is hunting for flesh and international trade in rare animals.
Therefore, the correct answer is option D.

Multiple choice commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

Occurence of endemic species in South America and Australia is due to 

  1. Extinction from other regions

  2. Continental separation

  3. Terrestrial route to these places

  4. Retrogressive evolution
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Endemic species are those species which occur in a restricted area. Seas from the barriers to free intercontinental movement and separates the continents, causing evolution and endemism. Hence, the correct answer is  option C.

Multiple choice commercial applications i love gujarat flora and fauna in forest ecosystem threatened species need of conservation

Which of the following factors affect the natural habitat of endemic species?

  1. Destruction of their habitat

  2. Increasing human population

  3. Introduction of new species

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

  • Habitat destruction occurs when natural habitats are no longer able to support the species present, resulting in the displacement or destruction of its biodiversity.
  • The growth of the human population has impacted the planet and affected biodiversity. The need for food, space and raw materials has resulted in the destruction of habitats and pollution.
  • Introduction of invasive species causes harm to wildlife in many ways. When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
So, the correct answer is 'All of the above'.