Tag: ecosystem

Questions Related to ecosystem

What are the important factors that bring about biological diversity?

  1. Temperature

  2. Enviornment

  3. Climatic conditions

  4. All of the above


Correct Option: D
Explanation:

The correct answer is 'all of the above'

Biological diversity occurs due to the differential adaptation of organisms to varying environmental factors such as differences in temperature and climate conditions. These various mechanisms applied for adapting create the vast biological diversity we see around the world. 
So the correct option is D.

Decomposers converts

  1. Organic material into inorganic material

  2. Organic matter into carbon dioxide and nutrients

  3. Kill the soil microbes

  4. All


Correct Option: B
Explanation:

Detritus is defined as dead and decaying organic matter that includes fallen leaves, dead plant parts and animals. It is the primary source of energy in the detritus food chain in which the microbes such as protozoans, bacteria and fungi help in the breaking down of the complex organic matter. They are called decomposers. Detritus food chain hence helps in soil replenishment by adding nutrients to the soil. They convert organic matter into carbon dioxide and nutrients. Thus the correct answer is option B.

The product of ecosystem processes which have environmental, asthetic and indirect economic value is called as

  1. Ecosystem services

  2. Biosphere services

  3. Environmental services

  4. None of the above


Correct Option: A

In an ecosystem which of the following are important components?

  1. Energy flow and food chain

  2. Mineral recycling and energy flow

  3. Food chain and decomposers

  4. All of the above


Correct Option: D
Explanation:

Any ecosystem has two components -biotic or living organisms and abiotic or non-living component. 

Further, two most important functional characteristics of any ecosystem are unidirectional flow of energy and cycling of material. The living organisms of an ecosystem are related through food chains, which gives rise to trophic levels in an ecosystem. Energy is transferred from one trophic level to the next through the food chains. 
Of all the organisms in an ecosystem, the most important role is played by decomposers. The nutrients are released back into the environment by the decomposition of dead organisms. Thus, the correct answer is option D.

Valuable, practical services that help to preserve ecosystem performed by nature are called

  1. Ecosystem service

  2. Biological control

  3. The green house effect

  4. Biosphere balancing


Correct Option: A

Which one of the following is the most stable ecosystem?

  1. Forest

  2. Mountain

  3. Desert

  4. Ocean


Correct Option: D

One way flow of energy through an ecosystem continuous in

  1. Biological System

  2. Chemical process

  3. Environment

  4. Atmosphere


Correct Option: A

Fuel powered ecosystem is also known as

  1. Urban industrial Ecosystem

  2. Unsubsidized natural solar powered ecosystem

  3. Naturally subsidized solar powered ecosystem

  4. Man subsidized solar power ecosystem


Correct Option: A

What does change over time and space?

  1. Ecological system

  2. Ecosystem

  3. Ecological Function

  4. Environment


Correct Option: B

Zone marking end of troposphere is known as:

  1. Stratopouse

  2. Tropopause

  3. Menopause

  4. Thermopause


Correct Option: B