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

Which of the following activities puts the greatest number of animals at risk for extinction?

  1. Destruction of habitat

  2. Hunting and fishing

  3. Making pets of wild animals

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

Habitat destruction is the leading cause of species extinction because it removes the resources, shelter, and space animals need to survive. While hunting and other factors impact populations, habitat loss has the most widespread and permanent effect.

Multiple choice

Which is the best way to get rid of invasive species?

  1. Kill all species, native and invasive

  2. Use chemicals to get rid of species

  3. Bring in predators to balance the invasive species
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biological control, such as introducing natural predators, is a common and effective method for managing invasive species without relying solely on harmful chemicals.

Multiple choice

Why are invasive species overpopulating areas?

  1. They hoard resources

  2. They have no natural predators

  3. They kill all the native species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Invasive species often thrive in new environments because they lack the natural predators and diseases that kept their population in check in their original habitat.

Multiple choice

Which of the following would not be a cause of extinction?

  1. natural disaster

  2. disease

  3. hunting

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

Extinction is the dying out of a species. Natural disasters, disease, and hunting are all environmental or human factors that can lead to extinction, whereas love is an emotion.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

There are four major causes of accelerated rates of species extinction, which are collectively called as 'the evil quartet'. Which one of the following is not included in 'the evil quartet'?

  1. Over exploitation

  2. Pollution

  3. Co-extinctions

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

The world is facing accelerated rates of species extinction, largely due to human interference. There are four major causes collectively called as the evil quarter.

Multiple choice social science waste generation and management origin of waste products e-wastes waste generation waste and its types

Which of the following consequences is due to the over exploitation of natural resources by man?

  1. Increase in natural resources

  2. Ecological imbalance

  3. Increase in the ozone layer

  4. Reappearance of some extinct species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Natural resources are the resources gifted by nature. these are useful for the sustenance of the living organism on earth. Overexploitation of natural resources leads to ecological balance. Human activities like deforestation is a major threat which causes global warming. Excessive mining shifting of land which causes volcanic eruptions.

So, the correct answer is option B.

Multiple choice geography climate and natural vegetation equatorial climatic region climatic regions the biosphere natural regions natural regions of the world

Which of these statements is not a valid reason for depletion of flora and fauna?

  1. Agricultural expansion

  2. Large scale developmental projects

  3. Grazing and fuel wood collection

  4. Rapid industrialisation and urbanisation

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Agricultural expansion, large-scale developmental projects, grazing, fuel wood collection, and rapid industrialization are all major valid reasons for the depletion of flora and fauna. Since all listed options are valid causes, none of these is the correct choice for a non-valid reason.

Multiple choice biology environmental pollution control of water pollution protecting our environment rules are for everyone

The first rate pollution monitor are

  1. molluscs

  2. butterflies

  3. honey bee

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

Freshwater molluscs--snails and bivalves--have been used frequently as bioindicator organisms. With increasing needs for research on contaminant effects in freshwater ecosystems, this kind of biomonitoring is likely to develop further in the future. Molluscs can be used effectively for studies of both organic and inorganic contaminants; this review focuses on studies involving bioaccumulation and toxicity of metals. Two important advantages of snails and bivalves over most other freshwater organisms for biomonitoring research are their large size and limited mobility.

So the correct answer is molluscs.

Multiple choice botany biotechnology and its applications biopiracy biotechnological regulations principles and process of biotechnology

Use of bio-resources by multinational companies and other organisations without proper authorisation from the countries and concerned without compensatory payment is termed as 

  1. Resource partitioning

  2. Biopiracy

  3. Patenting

  4. Biofortification
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Biopiracy is exploitation of bioresources of a company by organisations and multinationals for commercial purpose with or without patent but without any Access and Benefit Sharing Agreement (ABA). Bioresources or biological resources are all those organisms which can provide commercial benefits. They are abundant in developing countries have traditional knowledge related in bioresources. On the other hand, developed countries are poor in bioresources but are rich in technology. Traditional knowledge helps in saving time, effort and expenditure in developing refined product for commercialisation. Therefore, based on traditional knowledge, institutions and companies of industrialised nations are collecting and exploiting bioresources of other nations by getting them patented. 
So, the correct answer is 'Biopiracy'.
Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Wild varieties of plants must be conserved to

  1. Destroy ecosystem

  2. Feeding wild animals

  3. Future evolution

  4. Incorporate useful traits in future crop varieties
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wild varieties of plants must be conserved because they are of utmost value to plant breeders for producing improved and favourable varieties of plants by selecting useful genes from a wide range of their wild relatives. In other words, new and improved varieties of crops are derived from their wild relatives by genetic modification. Useful traits are like high yielding, disease resistant, stress resistant etc.

Multiple choice commercial applications environment in its totality alternatives for minimising depletion of natural resources components of environment effects and successes of environment conservation

The process by which an ecosystem species become extinct is known as ___________.

  1. Loss of biodiversity

  2. Deforestation

  3. Acid rain

  4. Bio-diversity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The loss of biodiversity refers to the decline or disappearance of biological diversity, which can lead to the extinction of species within an ecosystem.

Multiple choice zoology selection and evolution extinction extinctions environmental science

Which of the following is included in those species which are likely to become extinct?

  1. Endangered species

  2. Critically endangered species

  3. Vulnerable species

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

The species (including animals, plants, fungi, etc.) which are vulnerable to endangerment in the near future are known as threatened species. The International Union for Conservation of Nature (IUCN) is the authority on threatened species, and it treats threatened species as a group of three categories, depending on the degree relative to which they are threatened. Those categories are Vulnerable species; Endangered species and Critically endangered species. 

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