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 evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Which of the following examples show the interdependency of biotic and abiotic factors?

  1. Frigid climates do not support lizards and other cold-blooded animals

  2. Relation between water and life

  3. The need of sunlight for the process of photosynthesis

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The biotic components of the ecosystem are the producers and consumers. The abiotic or the non-living components include soil, water, light, inorganic substances.
  • Both biotic and abiotic factors are interdependent in an ecosystem, and if one factor is changed or removed, it can affect the entire ecosystem. Abiotic factors are especially important because they directly affect how organisms survive.
  • Examples showing the interdependency of biotic and abiotic factors include Frigid climates do not support lizards and other cold-blooded animals, Relation between water and life and the need for sunlight for the process of photosynthesis.
  • So, the correct answer is 'All the above'.
Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

An ecosystem is made up of one type of community.

  1. True

  2. False

  3. Either

  4. Neither
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ecosystem is a community of different organisms that interact with each other and with their surroundings or environment. A community is a group of populations of different species present in a given area. An ecosystem is made up of different communities. It includes different populations which interact with the biotic components and abiotic components of environment.
Hence, the statement given in the question is not correct.
So, the correct answer is 'False'.
Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Biotic potential refers to

  1. Increase of population under optimum conditions

  2. Increase of population under given conditions

  3. Increase of population under natural conditions

  4. Increase of population under climatic conditions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biotic potential is the maximum capacity of a population to reproduce under ideal conditions (environmental).

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Decomposers are considered as an abiotic component of the environment.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposers such as bacteria and fungi are living organisms, which classify them as biotic components of the ecosystem, not abiotic components. Abiotic components refer to non-living physical and chemical factors like temperature, light, and minerals.

Multiple choice biology human influences on the environment effects of water pollution effect of water pollution water pollution and its control

Consider the following statements regarding the ecosystem which helps in reducing the level of pollution in the atmosphere.
$1$. Ecosystems and ecological processes play an important role in maintenance of gaseous composition of the atmosphere, breakdown of wastes and removal of pollutants.
$2$. Some ecosystems, especially wetlands have the ability to breaking down and absorb pollutants.
$3$. Natural and artificial wetlands are being used to filter effluents to remove nutrients, heavy metals, suspended solids; reduce the BOD (Biological Oxygen Demand) and destroy harmful micro-organisms.
Which of the statements given is/are correct?

  1. $1$ only
  2. $1$ and $2$
  3. $2$ and $3$

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Ecosystems and ecological processes play an important role in the maintenance of gaseous composition of the atmosphere, breakdown of wastes and removal of pollutants.  Some ecosystems, especially wetlands have the ability to breaking down and absorb pollutants. Constructed wetlands are a sanitation technology that has not typically been designed for pathogen removal, but instead, have been designed to remove other water quality constituents such as suspended solids, organic matter (BOD/COD) and nutrients (nitrogen and phosphorus). Thus, all of these statements are true.

So the correct option is 'All of the above'.
Multiple choice biology animal world oviparous and viviparous diversity and classification in animals adaptations in animals

The seral communities developing on a water body are known as

  1. Hydrosere

  2. Hydrophyte

  3. Hydrosphere

  4. Hydrologic cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A;Hydrosere - Plant succession occurs in water bodies is called Hydrosere.

B.Hydrophyte - Plants grow in water related areas.
C.Hydrosphere - The area, in which water is present.
D.Hydrological cycle - Cyclic movement of water in nature is called Hydrological cycle
So, the correct option is 'Hydrosere'.

Multiple choice evs digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

Ecological pyramids are of

  1. Two types

  2. Three types

  3. Four types

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

A pyramid-shaped diagram represents quantity wise numbers of organisms, energy relationships, and biomass of an ecosystem; In lower trophic levels number of organisms are high(plants) and at the highest trophic level, lesser number as some energy is lost as heat, in each transformation. This relationship is sometimes called an ecological pyramid.  The ecological pyramids represent the trophic structure and also trophic function of the ecosystem. In many ecological pyramids, the producer form the base and the successive trophic levels make up the apex. The ecological pyramids may be of following three kinds-

Pyramid of Number- It is the arrangement of trophic level on the basis of the number of organism present at each stage.
Pyramid of Biomass-  It is the arrangement of trophic level on the basis of biomass present at each trophic levels.
Pyramid of Energy- It is the arrangement of trophic level on the basis of energy flow between them.

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Basic unit of ecological hierarchy is

  1. Ecosystem

  2. Biological community

  3. Population

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

The basic unit of ecological hierarchy is individual because a community starts building from an individual which grows onto form an entire ecosystem. 

It cannot be Ecosystem as that is one of the largest unit in hierarchy. Many biological communities together form an ecosystem and many individuals in a given space form a population. The ecological hierarchy goes like this: individual---> population---> community ----> ecosystem ----> biome ---> biosphere. So the correct answer is 'Individual'.