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 zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

___________ is a life process that is not essential for an individual's survival but for survival of the species.

  1. Growth

  2. Reproduction

  3. Respiration

  4. Nutrition
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Reproduction is a biological process in which an organism produces young ones (offspring) of the same species. It is one of the most important characteristic of the living organisms. Reproduction is essential for the survival of species but not for the survival of individuals.
So, the correct answer is 'Reproduction'.
Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

Biotic environment include __________.

  1. Producers

  2. Consumers

  3. Decomposers

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

Based on the object possessing life or not, the objects are classified as biotic and abiotic.

Biotic: These are living organisms that possess life and carry on metabolism accordingly. Biotic environment includes:

  • Producers prepare food by themselves like plants.
  • Consumers feed on plants and other organisms like herbivores, carnivores etc.
  • Decomposers convert dead and decayed matter into simpler organic matter. Examples are microorganisms.

Multiple choice geography earth as a planet atmosphere and its structures what is around us? the atmosphere the earth's structure components of earth earth and structure

Which of the following is not covered in the term biosphere?

  1. Plants

  2. Animals

  3. Man

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

The biosphere includes all living organisms (plants, animals, humans) and the environments they inhabit. Mountains are geological features and are part of the lithosphere, not the biosphere.

Multiple choice geography earth and biosphere atmosphere and its structures what is around us? the earth's structure components of earth earth and structure

Biosphere is existing because the interaction of ___________.

  1. lithosphere

  2. atmosphere

  3. hydrosphere

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The biosphere is the global sum of all ecosystems, representing the zone of life on Earth. It exists due to the complex interaction between the lithosphere (land), atmosphere (air), and hydrosphere (water).

Multiple choice zoology biology : an introduction characteristics of life living world and classification attributes of living organisms

Manuals contain information for:

  1. Habitat and distribution of animals in a given area.

  2. Habitat and distribution of plants found on earth.

  3. Identification of names of species found in an area.

  4. Habitat and distribution of some useful animals of a given area.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Identification of names of species found in an area

Manuals are useful in providing information for identification of names of species found in an area while Manographs contain information on any one taxon.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

A non-renewable resource is

  1. Soil fertility

  2. Rainfall

  3. Biological species

  4. Wildlife
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A non-renewable source of energy is atype of resource which cannot be replenished back or take a very long time to replenish back, so biological species once lost cannot come back.

So, the correct option is 'Biological species'.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

The resources that are derived from bio-mass of living organisms are called  ____________ resources.

  1. renewable

  2. non-renewable

  3. environmental

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

Resources derived from biomass, such as plants and animals, are considered renewable because biological processes can regenerate them within a human-relevant timeframe.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

The resources that can be replaced by natural ecological cycle is called

  1. Renewable

  2. non-renewable

  3. exhaustible

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

Renewable resources are those that can be naturally replenished or replaced by ecological cycles, such as solar energy, water, and biomass.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

Ecosystem dynamics is governed by

  1. Solar radiation and the carbon cycle

  2. Photosynthesis and respiration

  3. The carbon cycle and photosynthesis

  4. Energy flow and chemical/nutrient cycling

  5. The nitrogen cycle and the phosphorous cycle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ecosystem dynamics are primarily driven by the continuous flow of energy through trophic levels and the cycling of essential chemical nutrients through the biotic and abiotic components.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The energy flow in an ecosystem is

  1. Multidirectional

  2. Unidirectional

  3. Bidirectional

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

The flow of energy in the ecosystem is unidirectional. The energy enters the plants (from the sun) through photosynthesis during the making of food. This energy is then passed on to the successive trophic levels in a food chain is only 10% and rest energy get lost as heat during transfer and life process. 

Thus, the correct answer is option A.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

Transfer of energy in different trophic levels of an ecosystem is

  1. Bioenergetics

  2. Biosystem

  3. Geobiocoenosis

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

Flow of energy in different trophic levels of an ecosystem is called as bioenergetics. It is also called as energy flow. In this, there is flow of energy through the food chain. Solar energy is converted to chemical energy by photosynthetic plants. From plants, the energy is transferred to primary consumers and secondary consumers in a food chain. Decomposers release energy back to the environment by decomposing organic waste matter.

Thus, the correct answer is 'Bioenergetics.'

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

An ecosystem is maintained by the flow of energy derived from the Sun. Energy trapped by plants varies from ecosystem to ecosystem. The table given shows energy absorption by different vegetations of different ecosystem.

Vegetation $\%$ of energy absorption
a) Aquatic ecosystem $15-16\%$
b) Grassland $14-15\%$
c) Mixed forest $13-14\%$
d) Modern $C _3$ crops $12-13\%$
e) Modern $C _4$ crops $10-12\%$

Find the correct match.

  1. C

  2. B

  3. A

  4. E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An ecosystem is normally an open system because there are a continuous and variable entry and loss of energy and material. The ecosystem is the basic fundamental unit of ecology which includes both the organism and the non-living environment is influencing the property of each other and is necessary for the maintenance of life. The whole Earth can be known as biosphere or ecosphere.

Various plant and various vegetation have a different level of energy absorption. There is a grassland ecosystem and a forest ecosystem and many other.
So, the correct option is 'C' 

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The pyramid of energy is the best representation of an ecosystem because it indicates

  1. Relation of all plants and animals

  2. Total energy present in an ecosystem

  3. The rate of flow of energy through the food chain

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The pyramid of energy shows the relationship between the flow of energy and different trophic level.
  • The pyramid of energy depicts the flow of energy in the ecosystem.
  • The source of energy in an ecosystem is the sun, the producers trap the solar energy and use it for photosynthesis which is in turn eaten by organisms of the higher trophic level such as primary consumers, secondary consumers.
  • So, the correct answer is 'The rate of flow of energy through the food chain'.
Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The importance of ecosystem maintenance lies in

  1. Cycling of materials

  2. Flow of energy

  3. Both of the above

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

An ecosystem comprises of biotic and abiotic components which interact with each other to maintain an equilibrium. A major focus of ecosystem ecology is on functional processes, ecological mechanisms, that maintain the structure and services produced by ecosystems. These include primary productivity (production of biomass), decomposition, and trophic interactions. The various trophic levels of an ecosystem interact with each other by  a flow of energy and cycling of materials from one trophic level to the other.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The study of energy transfer in an ecosystem at different trophic levels is known as

  1. Bioenergetics

  2. Geobiocoenosis

  3. Holocoenosis

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

Bioenergetics is a field in biochemistry, that concerns energy flow through living systems. This includes the study of different cellular processes, such as cellular respiration and the many other metabolic processes, that can lead to production and utilization of energy in forms such as ATP molecules.