Environment and Biodiversity GK MCQ and Quiz (Set 1)

Environment and Biodiversity GK MCQ Quiz for Exam Preparation

Environment and Biodiversity GK MCQ quiz for APSC, SSC, UPSC, and other competitive exams. This quiz features important questions on key topics related to the environment and biodiversity.


What is the largest biome on Earth?

  • A) Desert
  • B) Tundra
  • C) Taiga
  • D) Aquatic

Answer: D) Aquatic

Which gas is primarily responsible for the greenhouse effect?

  • A) Oxygen
  • B) Carbon Dioxide
  • C) Nitrogen
  • D) Hydrogen

Answer: B) Carbon Dioxide

What is the primary cause of deforestation worldwide?

  • A) Urbanization
  • B) Agriculture
  • C) Mining
  • D) Forestry

Answer: B) Agriculture

Which of the following is a keystone species?

  • A) Deer
  • B) Wolves
  • C) Salmon
  • D) All of the above

Answer: D) All of the above

What is the term for the variety of life in a particular habitat or ecosystem?

  • A) Ecosystem Diversity
  • B) Genetic Diversity
  • C) Species Diversity
  • D) Biodiversity

Answer: D) Biodiversity

Which of the following is a renewable resource?

  • A) Coal
  • B) Natural Gas
  • C) Solar Energy
  • D) Nuclear Energy

Answer: C) Solar Energy

What is the main threat to coral reefs?

  • A) Overfishing
  • B) Pollution
  • C) Climate Change
  • D) All of the above

Answer: D) All of the above

What is the largest terrestrial ecosystem?

  • A) Tundra
  • B) Grassland
  • C) Forest
  • D) Desert

Answer: C) Forest

Which international agreement aims to combat climate change?

  • A) Kyoto Protocol
  • B) Montreal Protocol
  • C) Rio Declaration
  • D) Basel Convention

Answer: A) Kyoto Protocol

What is the term for the natural home of an organism?

  • A) Habitat
  • B) Niche
  • C) Ecosystem
  • D) Community

Answer: A) Habitat

Which of the following is considered an invasive species?

  • A) Monarch Butterfly
  • B) Asian Carp
  • C) Bald Eagle
  • D) Redwood Tree

Answer: B) Asian Carp

What is the primary purpose of a biosphere reserve?

  • A) Industrial development
  • B) Sustainable development and conservation
  • C) Urban expansion
  • D) Agricultural production

Answer: B) Sustainable development and conservation

Which of the following ecosystems has the highest biodiversity?

  • A) Desert
  • B) Tundra
  • C) Rainforest
  • D) Grassland

Answer: C) Rainforest

What is the primary function of wetlands?

  • A) Water filtration
  • B) Flood control
  • C) Wildlife habitat
  • D) All of the above

Answer: D) All of the above

Which of the following is a consequence of global warming?

  • A) Rising sea levels
  • B) Increased frequency of storms
  • C) Deforestation
  • D) Both A and B

Answer: D) Both A and B

What type of pollution is caused by excess nutrients in water bodies?

  • A) Air Pollution
  • B) Soil Pollution
  • C) Water Pollution
  • D) Noise Pollution

Answer: C) Water Pollution

What is the role of producers in an ecosystem?

  • A) Decompose organic material
  • B) Consume other organisms
  • C) Produce energy through photosynthesis
  • D) Provide shelter

Answer: C) Produce energy through photosynthesis

Which of the following is a major greenhouse gas?

  • A) Helium
  • B) Methane
  • C) Argon
  • D) Neon

Answer: B) Methane

What is the primary goal of conservation biology?

  • A) To promote industrial growth
  • B) To protect endangered species and habitats
  • C) To increase agricultural output
  • D) To develop new technologies

Answer: B) To protect endangered species and habitats

Which of the following is an example of sustainable development?

  • A) Deforestation for agriculture
  • B) Fishing without limits
  • C) Solar energy production
  • D) Urban sprawl

Answer: C) Solar energy production

Which organization is responsible for monitoring the world’s biodiversity?

  • A) World Health Organization (WHO)
  • B) International Union for Conservation of Nature (IUCN)
  • C) United Nations Environment Programme (UNEP)
  • D) World Wildlife Fund (WWF)

Answer: B) International Union for Conservation of Nature (IUCN)

What is the term for species that are at risk of extinction?

  • A) Vulnerable
  • B) Endangered
  • C) Threatened
  • D) All of the above

Answer: D) All of the above

Which habitat is characterized by very low temperatures and low precipitation?

  • A) Desert
  • B) Tundra
  • C) Rainforest
  • D) Savanna

Answer: B) Tundra

What percentage of the Earth’s surface is covered by forests?

  • A) 10%
  • B) 25%
  • C) 30%
  • D) 50%

Answer: C) 30%

Which of the following is a non-renewable resource?

  • A) Wind Energy
  • B) Natural Gas
  • C) Solar Energy
  • D) Biomass

Answer: B) Natural Gas

What is the primary cause of loss of biodiversity?

  • A) Habitat destruction
  • B) Pollution
  • C) Overexploitation
  • D) Climate change

Answer: A) Habitat destruction

Which of the following practices is most effective in conserving water?

  • A) Rainwater harvesting
  • B) Water-intensive agriculture
  • C) Urbanization
  • D) Deforestation

Answer: A) Rainwater harvesting

What is the main objective of the Convention on Biological Diversity (CBD)?

  • A) Promote economic growth
  • B) Conserve biological diversity
  • C) Control pollution
  • D) Regulate international trade

Answer: B) Conserve biological diversity


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