Environmental Studies ยท Biology

Ecology and Biodiversity

1,739 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

Which of the following is not a characteristic of non-renewable natural resources?

  1. These resources are replenished within a reasonable time.

  2. These resources can be used forever provided they are used in limited amounts.

  3. They are both abiotic and biotic.

  4. The availability of these resources can be enhanced only by enhancing replenishment.

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as this is not a characteristic of non-renewable natural resources. Non-renewable natural resources are only abiotic in nature.

Multiple choice

Environment is a finely tuned and extremely well balanced ecological mechanism. Flora and fauna, birds, animals and, of course, humans play a vital role. Touch one adversely and all suffer.

What is the most critical completion of the passage?

  1. Let us reverse this environmental degradation.

  2. It is a 'touch-me-not' situation.

  3. They are all interdependent.

  4. Let us help save ecology.

  5. We are courting irreversible disaster.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the only option that continues the negative tone of the argument. Environment includes everything on earth. 'Touch one adversely and all suffer.' We shall definitely be courting trouble if we do so.

Multiple choice

Ecology is concerned with:

  1. Environment

  2. Echograph

  3. Economics

  4. Cultivation of foodgrains

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecology is the branch of biology that deals with the relations of organisms to one another and to their physical surroundings, which is the environment.

Multiple choice

What are the constituents of environment?

  1. Air, water, land

  2. Air, water, land and plants

  3. Air, water, land, plants and animals

  4. Air, water land, plants, animals and micro organisms

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The environment is a complex system consisting of both abiotic factors (air, water, land) and biotic factors (plants, animals, and microorganisms). Option D is the most comprehensive definition provided.

Multiple choice

The best example of a mini ecosystem is a/an

  1. water bottle

  2. kitchen

  3. planter

  4. aquarium

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An aquarium is a self-contained, artificial environment that mimics a natural ecosystem, containing both biotic (fish, plants) and abiotic (water, light, substrate) components.

Multiple choice

What is an ecosystem?

  1. All organisms living in a given region.

  2. Only the producers living in a given region.

  3. The physical settings of a given region.

  4. All organisms and the physical settings of a given region.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An ecosystem is defined as a community of living organisms (biotic) interacting with the non-living (abiotic) components of their environment as a system.

Multiple choice

What is a biome?

  1. A geographical region with a characteristic climate and biota

  2. The climate of a region

  3. The biota of a region

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

A biome is a large naturally occurring community of flora and fauna occupying a major habitat, defined by its specific climate and geographical conditions.

Multiple choice

Which of the following statements is not true for environment?

  1. It includes physical factors of surroundings only.

  2. It includes both physical and biotic factors.

  3. Gas, light and temperature are its physical factors.

  4. A place where an organism lives is known as its habitat.

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The environment includes both physical (abiotic) and biotic factors. Statement A is incorrect because it claims the environment includes only physical factors.

Multiple choice

_______ is considered as the structural and functional unit of biosphere.

  1. Food Web

  2. Ecological pyramids

  3. Energy Flow

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

An ecosystem can be defined as a structural and functional unit of biosphere or segment of nature consisting of community of living beings and the physical environment, both interacting and exchanging materials between them.

Multiple choice

The largest ecological unit is

  1. Ecosystem

  2. Biome

  3. Population

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

Biome, is a large, regional or sub continental biosystem characterized by a major vegetation type or other distinct landscape characters, such as, tropical deciduous forest, tundra biome, etc. The major terrestrial ecosystems (largest ecological units) of distinctive terrestrial areas, with their climax plants and associated animals, are known as Biomes.