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

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Non living things in an environment is known as

  1. Biotic Factors

  2. Abiotic Factors

  3. Biotic and abiotic factors

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

In ecology, the environment is divided into biotic factors (living components) and abiotic factors (non-living components). Abiotic factors include things like sunlight, temperature, water, and soil.

Multiple choice biology main natural resources classification of threatened species red data book methods of conservation

Biosphere reserve is

  1. A protected habitat for specific endangered species

  2. A place where specific endangered faunal species are well protected

  3. A reserve forest where specific endangered floral species are well protected

  4. A protected area for the whole ecosystem
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biosphere reserves are areas of terrestrial and coastal ecosystems promoting solutions to restore the conservation of biodiversity with its sustainable use. The plan is to promote management, research and education in ecosystem conservation. This includes the 'sustainable use of natural resources'.

So, the correct answer is 'A protected area for the whole ecosystem'.

Multiple choice biology main natural resources classification of threatened species red data book methods of conservation

Red Data Book or IUCN Red List provides data on

  1. Biota of Red Sea

  2. Effect of red light or photosynthesis

  3. Red pigmented plants

  4. Threatened species
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. As per the Red list of 2000, there are 11,096 threatened species.

So, the correct answer is 'Threatened species'.

Multiple choice biology main natural resources classification of threatened species red data book methods of conservation

Which one of the following statements is appropriate for the Red Data Book?

  1. It gives data on species threatened with extinction

  2. It is a list of plants and animals is Res Sea

  3. It provides data on effect of red light on photosynthesis

  4. It is the list of red-pigmented plants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Red Data Book is the international standard for documenting the status of species that are facing a high risk of extinction.

Multiple choice development of plants plant growth growth and development plant growth and development biology

Growth is primarily affected by two climatic factors ...........................

  1. Light and temperature

  2. Temperature and relative humidity

  3. Light and wind

  4. Rainfall and temperature
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Growth in plants is affected by a number of environmental factors. The most important ones are light and temperature. This is because plants are autotrophic organisms and use light energy to produce their food. Since plants are living organisms, their metabolism requires ambient temperature and pH. This is because all the metabolic reactions are catalyzed by enzymes.

Multiple choice evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

The key elements that determine differences in environmental conditions of different habitats include 

  1. Temperature

  2. Light

  3. Soil

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

Environment is the sum of all boo tic (living) and a biotin (non-living) factors that surround and practically influence the organism. All components are Inter-linked and inter-dependent. Biotin factors include different organism. Abiotic factors are non-living factors survival, form, function, behavior and reproduction of organism. There are many abiotic factors. The four major abiotic factors are temperature, water, light and soil. 

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

Multiple choice evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

Which of the following is called as dynamic living entity?

  1. Oceans

  2. Villages

  3. Cities

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

  • Forests are areas of biodiversity hot spots, as we know. They are full of plants, trees, animals and birds. 
  • Even the dead bodies of plants and animals are decayed by saprophytes, supporting large forms of life. 
  • In this process, they provide the soil with nutrients that help the seeds to grow properly and support new forms of life. So we can say that forests are dynamic living entities.
So, option D, 'Forests' is the correct answer.

Multiple choice evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

The area to which a species is biologically adapted to live is known as __________

  1. Niche

  2. Habitat

  3. Succession

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

A habitat is the natural environment in which a particular species lives, grows, and reproduces. It provides the necessary conditions for the species to survive.

Multiple choice population and how it changes human population ecology and environment zoology

All the populations of organisms living together and potentially interacting in an area form a 

  1. Carrying capacity

  2. Biome

  3. Ecosystem

  4. Biological community

  5. Geographical community
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A biological community consists of all the populations of different species that live and interact in a specific area.

Multiple choice population and how it changes human population ecology and environment zoology

Individuals of a species which occur in a particular area constitute

  1. Flora

  2. Fauna

  3. Population

  4. Flora and fauna
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A population is defined as a group of individuals of the same species occupying a specific geographic area at a given time. Flora and fauna refer to all plant and animal life, respectively, in a region, which may include many different species.

Multiple choice population and how it changes human population ecology and environment zoology

The correct sequence, from simplest to most complex is represented by

  1. Population - organism - community - ecosystem - biosphere

  2. Organism - population - community - ecosystem - biosphere

  3. Organism - population - community - biosphere - ecosystem

  4. Population - organism - community - biosphere - ecosystem

  5. Organism - community - population - ecosystem - biosphere
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The biological hierarchy proceeds from the individual organism to a population (group of same species), then to a community (multiple species), then to an ecosystem (biotic and abiotic factors), and finally to the biosphere (the global sum of all ecosystems).

Multiple choice population and how it changes human population ecology and environment zoology

Organisms belonging to the same species form a

  1. Population

  2. Community

  3. Ecosystem

  4. Trophic level

  5. Guild
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Species is the basic unit in a biological classification and taxonomic ranking system. Generally, species is defined as a group of organisms in which two individuals are capable of reproducing their offspring, Organisms belonging to the same species in a particular locality is termed as population. 

Multiple choice population and how it changes human population ecology and environment zoology

Individuals of a species which occur in a particular area constitute ______________.

  1. Flora

  2. Fauna

  3. Community

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

This is a duplicate of question 451555 with the same correct answer. A population consists of all individuals of the same species inhabiting a particular area. It is distinct from community (multiple species), flora (plants), or fauna (animals).

Multiple choice population and how it changes human population ecology and environment zoology

Individuals of any species at a place from

  1. biotic community

  2. ecosystem

  3. population

  4. biome
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A. Biotic community is a group of populations of different species in a given area.
B. The ecosystem is the community of organisms that interact with each other and their surroundings or environment.
C. A population is a group of individual organisms of same species living in a given area.
D. A biome is a complex of different type of communities which are maintained under more or less similar climatic conditions.
So, the correct answer is 'Population'.
Multiple choice population and how it changes human population ecology and environment zoology

Individual of one kind occupying a particular geographic area at a given time are called

  1. Community

  2. Population

  3. Species

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

Individuals of the same kind (species) occupying a specific area at a specific time are defined as a population. A community involves multiple species, and a species is the general classification.