Environmental Studies · 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
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a colony
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plaque
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movie about biology
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matrix
B
Correct answer
Explanation
A biofilm is a structured community of microbial cells attached to a surface and encased in a self-produced matrix. Dental plaque is a classic example of a biofilm formed on teeth.
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Is a large community of living organisms in a particular area
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type of natural environment in which a particular species of organism live
B
Correct answer
Explanation
A habitat is the specific natural environment where a particular species lives and finds the resources it needs to survive. Option A describes an ecosystem or community.
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Is a large community of living organisms in a particular area
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type of natural environment in which a particular species of organism live
A
Correct answer
Explanation
An ecosystem consists of a community of living organisms interacting with their physical environment. Option B describes a habitat.
A
Correct answer
Explanation
Grasslands have fertile soil and flat terrain, making them highly suitable for agriculture, which is why much of the world's grassland has been converted to farmland.
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Animals
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Rocks
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Minerals
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Soils
A
Correct answer
Explanation
Biotic resources are those obtained from the biosphere and have life, such as plants and animals. Rocks, minerals, and soils are abiotic (non-living) resources.
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Persons
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Society
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Environment
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Identity
D
Correct answer
Explanation
Identity is formed through the ongoing interaction between an individual and their social context across micro, meso, and macro levels.
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marine biomes
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aquatic sectors
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aquatic life zones
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marine zones
C
Correct answer
Explanation
Aquatic life zones are the aquatic equivalents of terrestrial biomes, categorized by physical and chemical factors like salinity, depth, and temperature.
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clear water & low population of phytoplankton
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low level of nutrients & oligotrophic lake
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high levels of O2
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A and B
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flowing (lotic); standing (lentic)
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standing (lentic); flowing (lotic)
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neither of the above
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A&B
B
Correct answer
Explanation
Freshwater life zones are classified as standing (lentic) systems, such as lakes and ponds, and flowing (lotic) systems, such as streams and rivers.
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biodiversity
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food chain
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lithosphere
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relationship
A
Correct answer
Explanation
Biodiversity refers to the variety and variability of life on Earth, encompassing the different species of plants, animals, and microorganisms, their genes, and the ecosystems they form.
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Individual
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Population
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Community
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Ecosystem
B
Correct answer
Explanation
A population consists of all the members of a single species living in a specific area at the same time. Ducks on a lake represent a population of that species.
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Individual
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Population
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Community
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Ecosystem
B
Correct answer
Explanation
A population is defined as all the individuals of the same species living in a specific area.
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Biotic Factors
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Abiotic Factors
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Symbiosis
B
Correct answer
Explanation
Abiotic factors are the nonliving chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems, such as water, sunlight, and air.
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Community
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Ecosystem
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Biome
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Biosphere
D
Correct answer
Explanation
The biosphere is the global sum of all ecosystems, representing the zone of life on Earth.
C
Correct answer
Explanation
An organism's niche refers to its role, function, or way of life within its environment, including how it interacts with biotic and abiotic factors.