Tag: human influences on the environment

Quizzes (9) Questions (194)

Questions Related to human influences on the environment

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Lichens indicate pollution by

  1. $O _3$
  2. $SO _2$
  3. $NO _2$

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

Lichens are the symbiotic association of the algae and fungi. These absorb their mineral nutrients from the atmosphere rather than the soil. So, the contamination of the atmospheric air will result in their death. Lichens show specific sensitivity to sulphur dioxide and vanish from the area wherever it is present. So, these are called the indicators of the sulphur dioxide pollution.

Hence, the correct answer is 'SO$ _{2}$'.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Common indicator organism of water pollution is

  1. <p>Escherichia coli</p>

  2. <p>Cholera vibrio</p>

  3. <p>Salmonella typhi</p>

  4. <p>Entamoeba histolytic</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coliform bacteria are found in human faeces. Presence of such bacteria (E. coli is a member of the faecal coliform group) in surface water is a common indicator of faecal contamination. Sanitation program test detects the water for clearing contamination of faeces. Cholera vibrio, Salmonella typhi, Entamoeba histolytica are the pathogens found in the stagnant water or when the medical waste contaminates the water body. 

Hence, the correct answer is 'Escherichia coli'.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Pollution indicator is

  1. <p>Agrobacterium</p>

  2. Lichen

  3. <p>Pteridium</p>

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lichens represent the symbiotic association between the algae and the fungi. These absorb their mineral nutrition from the moisture-laden air rather than the soil. So, the contamination of the air severely impairs their growth and they disappear from the areas that have a heavy concentration of sulphur pollutants in the air. Due to this sensitivity, these are considered to be the bioindicators of air pollution.

Hence, the correct answer is 'Lichen'

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Use of lichens in case of pollution is

  1. Treatment of pollutant water

  2. Bioindicators of pollution

  3. Promote pollution

  4. Lichens have no relation with pollution
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lichen represents the symbiotic association between the algae and fungi. These absorb their mineral nutrients from the atmospheric moisture rather than the soil. So, when the air is contaminated with the sulphur oxides, they show extreme sensitivity to the toxic gas. Their existence is threatened by the oxides of sulphur in the air. The disappearance of the lichen, when exposed to the sulphur oxide, is used as bioindicator of the sulphur pollution in the air. 

So, the correct answer is 'Bioindicators of pollution'

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

$SO _2$ pollution is indicated by destruction of.

  1. Climbers

  2. Lichens

  3. Mosses

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

Lichens are sensitive to the levels of SO$ _2$ in the atmosphere.

The sulphurous and sulphuric acid compounds affect the lichen growth.
The lichens are sensitive to low pH and hence die off the trees, boulders and cliffs indicating SO$ _2$ pollution.
So, the correct option is 'Lichens'.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Lichens do not occur in areas with

  1. Pollution

  2. Humidity

  3. Low temperature

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

Lichens represent the symbiotic association between the algae and the fungi. These absorb their mineral nutrition from the moisture-laden air rather than the soil. So, the contamination of the air severely impairs their growth and they disappear from the areas that have a heavy concentration of sulphur pollutants in the air. Due to this sensitivity, these are considered to be the bioindicators of air pollution.

Hence, the correct answer is 'Pollution'.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Which is indicator of industrial pollution?

  1. <p> Biston belularia</p>

  2. Chamaeleon

  3. Lichen

  4. Bengal Tiger
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

An indicator species is the one that either shows sensitivity or sustenance in the pollution. The lichens are the indicator species of air pollution because they cannot survive in the air polluted with the oxides of sulphur, released by industrial emissions. This is so because lichens absorb mineral nutrients from the moisture in the air and any contaminant in the air makes it difficult for them to perform the vital activities of life. Biston betularia is a peppered moth. Their population was dominated by white coloured varieties before the industrialization in England because the predators fed on black moths easily visible on the white coloured bark of the trees. Due to the industrialization, the pollution through emission released soot that was deposited on the white bark of the trees, due to which the white population shifted to black population as the white moths were now eaten by the predators.

Hence, the correct answer is 'Lichen and Biston betularia'

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

An indicator species of polluted waters is _________

  1. Tubifex

  2. Phytoplankton

  3. Zooplankton

  4. Prawn
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Tubifex, also known as sludge worm or sewage worm, can survive in a eutrophic lake. Hence, it is considered to be a pollution indicator.
B. Phytoplankton are free floating autotrophic and microscopic marine algae.,
C. Zooplankton are the microscopic and heterotrophic organisms that drift in the oceans.
D. Prawn is a crustacean which is used as a source of food.
So, the correct answer is 'Tubifex'.
Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

MPN indicates

  1. Water pollution

  2. Atmospheric pollution

  3. Faecal pollution

  4. Industrial pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Most Probable Number (MPN) is a method used to estimate the concentration of viable microorganisms in a sample by means of replicate liquid broth growth in ten-fold dilutions. MPN is most commonly applied for quality testing of water i.e to ensure whether the water is safe or not in terms of bacteria present in it.
So the correct answer is 'Water pollution'.
Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

What is the full form of MPCB?

  1. Mahanagar pollution control board

  2. Maharashtra pollution control board

  3. Multiple pollutant control board

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

MPCB is the Maharashtra Pollution Control Board. It implements a range of environmental legislation in the state of Maharashtra, India. The MPCB functions under the administrative control of Environment Department of the Government of Maharashtra.