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

An example of biotic components in nature is

  1. Cells

  2. Organic molecules

  3. Plants

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Biotic components are the living things that shape an ecosystem. Examples of biotic components include animals, plants, fungi, and bacteria. Abiotic components are non-living components that influence an ecosystem. Examples of abiotic factors are temperature, air currents, and minerals.

So, the correct answer is 'D'.
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 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'.