Environmental Studies ยท Biology

Ecology and Biodiversity

1,737 Questions

Ecology and biodiversity are vital topics in environmental studies, covering ecosystem structures, species diversity, and environmental impacts. These concepts are frequently tested in competitive examinations for civil services and state selections. The questions cover carrying capacity, ecological succession, and conservation fundamentals.

Species richness measurementTypes of ecological diversityBiome distribution factorsCarrying capacity conceptEcosystem servicesEnvironmental Impact Assessment

Ecology and Biodiversity Questions

Multiple choice

What is the primary factor that determines the resilience of desert ecosystems?

  1. Availability of water

  2. Temperature fluctuations

  3. Soil composition

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

The availability of water is the primary factor that determines the resilience of desert ecosystems. Deserts are characterized by low precipitation and high evaporation rates, making water a scarce resource. The ability of desert plants and animals to adapt to and survive in these conditions is crucial for the resilience of the ecosystem.

Multiple choice

What is the role of microorganisms in the resilience of desert ecosystems?

  1. They help decompose organic matter and recycle nutrients.

  2. They contribute to soil formation and stability.

  3. They form symbiotic relationships with plants, helping them access water and nutrients.

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

Microorganisms play a crucial role in the resilience of desert ecosystems. They help decompose organic matter and recycle nutrients, contributing to soil formation and stability. They also form symbiotic relationships with plants, helping them access water and nutrients in exchange for carbohydrates.

Multiple choice

The concept of 'ecological footprint' measures:

  1. The amount of land and resources required to sustain a given population

  2. The amount of pollution generated by a given population

  3. The number of species found in a given ecosystem

  4. The rate at which a population is growing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The 'ecological footprint' is a measure of the amount of land and resources required to produce the goods and services consumed by a population, including the land used for agriculture, forestry, and urban development.

Multiple choice

What is the concept of 'natural capital' in environmental economics?

  1. The stock of natural resources and ecosystems that provide benefits to humans

  2. The value of natural resources and ecosystems in monetary terms

  3. The ability of natural resources and ecosystems to generate economic growth

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

Natural capital refers to the natural assets that provide essential services and benefits to human societies, such as clean air, water, and biodiversity.

Multiple choice

What are provisioning services?

  1. The tangible benefits that humans receive from ecosystems

  2. The processes that occur within ecosystems

  3. The interactions between different species in an ecosystem

  4. The physical components of an ecosystem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Provisioning services are the tangible benefits that humans receive from ecosystems, such as food, water, and shelter. These services are essential for human survival and well-being.

Multiple choice

Which of the following is NOT a provisioning service?

  1. Food

  2. Water

  3. Shelter

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

Biodiversity is not a provisioning service because it is not a tangible benefit that humans receive from ecosystems. Provisioning services are the tangible benefits that humans receive from ecosystems, such as food, water, and shelter.

Multiple choice

The term 'biodiversity' refers to:

  1. The variety of life on Earth

  2. The number of species on Earth

  3. The genetic diversity within a species

  4. The distribution of species across the globe
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity refers to the variety of life on Earth, including the diversity of species, ecosystems, and genetic variation within species.

Multiple choice

The term 'ecosystem services' refers to:

  1. The benefits that ecosystems provide to humans

  2. The costs associated with maintaining ecosystems

  3. The value of ecosystems in monetary terms

  4. The impact of human activities on ecosystems
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecosystem services are the various benefits that ecosystems provide to humans, such as clean air, water, food, and pollination.

Multiple choice

What is the term used to describe the interconnectedness of species and their roles in an ecosystem?

  1. Biodiversity

  2. Ecological balance

  3. Symbiosis

  4. Food web
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ecological balance refers to the interconnectedness of species and their roles in an ecosystem, highlighting the delicate equilibrium that maintains the stability and functioning of the natural world.

Multiple choice

What is the term used to describe the interconnectedness of species and their roles in an ecosystem, often represented as a network of interactions?

  1. Food web

  2. Ecological network

  3. Species interaction network

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

Food web, ecological network, and species interaction network all refer to the interconnectedness of species and their roles in an ecosystem, often represented as a network of interactions.

Multiple choice

What is biodiversity?

  1. The variety of life on Earth

  2. The number of different species on Earth

  3. The genetic diversity within a species

  4. The distribution of species across the Earth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity is the variety of life on Earth, including the number of different species, the genetic diversity within species, and the distribution of species across the Earth.

Multiple choice

What are ecosystem services?

  1. The benefits that humans derive from ecosystems

  2. The processes that occur in ecosystems

  3. The components of ecosystems

  4. The interactions between organisms in ecosystems
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecosystem services are the benefits that humans derive from ecosystems, such as clean air and water, food, shelter, and recreation.

Multiple choice

Which of the following is an example of an ecosystem service?

  1. Pollination of crops by bees

  2. Decomposition of organic matter by bacteria

  3. Cycling of nutrients through the food web

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

All of the above are examples of ecosystem services. Pollination of crops by bees helps to ensure food production, decomposition of organic matter by bacteria helps to recycle nutrients, and cycling of nutrients through the food web helps to maintain the health of ecosystems.

Multiple choice

What is the difference between biodiversity and ecosystem services?

  1. Biodiversity is the variety of life on Earth, while ecosystem services are the benefits that humans derive from ecosystems

  2. Biodiversity is the number of different species on Earth, while ecosystem services are the processes that occur in ecosystems

  3. Biodiversity is the genetic diversity within a species, while ecosystem services are the interactions between organisms in ecosystems

  4. Biodiversity is the distribution of species across the Earth, while ecosystem services are the components of ecosystems
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity is the variety of life on Earth, including the number of different species, the genetic diversity within species, and the distribution of species across the Earth. Ecosystem services are the benefits that humans derive from ecosystems, such as clean air and water, food, shelter, and recreation.

Multiple choice

Which of the following is not an example of an ecosystem service?

  1. Pollination of crops by bees

  2. Decomposition of organic matter by bacteria

  3. Cycling of nutrients through the food web

  4. Production of oxygen by plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Production of oxygen by plants is not an example of an ecosystem service because it is a natural process that occurs regardless of human activity. Ecosystem services are the benefits that humans derive from ecosystems, such as clean air and water, food, shelter, and recreation.