CUET-PG SERIES Environmental-studies
Ecology And Ecosystem
15 previous year questions.
Volume: 15 Ques
Yield: Medium
High-Yield Trend
15
2023 Chapter Questions 15 MCQs
01
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): The average composition of atmosphere near the surface of earth is given on dry basis and in terms of mixing ratio (weight percent basis).
Reasons (R): Water content in atmosphere near the surface of the earth is variable with respect to location, time and the concentration of gases in volumetric units (moles/litre) varies with temperature and pressure conditions.
In the light of the above Statements, choose the correct answer from the options given below:
Assertion (A): The average composition of atmosphere near the surface of earth is given on dry basis and in terms of mixing ratio (weight percent basis).
Reasons (R): Water content in atmosphere near the surface of the earth is variable with respect to location, time and the concentration of gases in volumetric units (moles/litre) varies with temperature and pressure conditions.
In the light of the above Statements, choose the correct answer from the options given below:
1
Both (A) and (R) are true and (R) is the correct explanation of (A)
2
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
3
(A) is true but (R) is false
4
(A) is false but (R) is true
02
PYQ 2023
medium
environmental-studies ID: cuet-pg-
El Nino and La Nina phenomena are observed in-
1
Pacific Ocean
2
Indian Ocean
3
Mediterranian Sea
4
Atlantic Ocean
03
PYQ 2023
hard
environmental-studies ID: cuet-pg-
What will be the concentration of nitrogen (N) in a 31 ppm solution of nitrate?
1
31 ppm
2
7 ppm
3
14 ppm
4
28 ppm
04
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Match List I with List II
| LIST I (Biographic Zone) | LIST II (Biotic Provinces) | ||
| A. | Himalayan | I. | Kutch |
| B. | Desert | II. | North West Himalaya |
| C. | Semi Arid | III. | Punjab |
| D. | Western Ghats | IV. | Malabar Coast |
Choose the correct answer from the options given below:
1
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
2
(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
3
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
4
(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
05
PYQ 2023
medium
environmental-studies ID: cuet-pg-
A planet having 300 K average surface temperature will emit maximum radiation in
1
Ultra violet region
2
Visible region
3
Infrared region
4
Microwave region
06
PYQ 2023
medium
environmental-studies ID: cuet-pg-
The high impact species whose removal from community affects persistence of other species, and their impact is disproportionate to abundance are known as ______.
1
Umbrella species
2
Flagship species
3
Exotic species
4
Keystone species
07
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Who among the following developed the Gaia Hypothesis ?
1
E. S. Rowland
2
Mario Moling
3
James E. Lovelock
4
William Golding
08
PYQ 2023
medium
environmental-studies ID: cuet-pg-
A population of genetically identical cells sharing a particular resources within an ecological riche is called -
1
Prototype
2
Ecotype
3
Serotype
4
Genotype
09
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Given below are two statements:
Statement I: Plant roots are surrounded by microorganisms as part of soil-plant-microbe ecosystem which can be termed as the rhizosphere.
Statement II: Root exudates have no effect on Rhizosphere ecology.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I: Plant roots are surrounded by microorganisms as part of soil-plant-microbe ecosystem which can be termed as the rhizosphere.
Statement II: Root exudates have no effect on Rhizosphere ecology.
In the light of the above statements, choose the most appropriate answer from the options given below:
1
Both Statement I and Statement II are correct
2
Both Statement I and Statement II are incorrect
3
Statement I is correct but Statement II is incorrect
4
Statement I is incorrect but Statement II is correct
10
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Which one of the following is true about the sporophyte of Riccia ?
1
It has well-developed foot, seta and capsule
2
It posseses the pseudoelaters
3
It lacks foot seta and claters and embedded in the gametophyte
4
It does not depend on the gametophyte for nutrition and survive independently
11
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Choose the incorrect statement about Acid Rain.
1
Acid rain is primarily caused by NO2 and SO2
2
Acid rain is responsible for defacing of monuments
3
Acid rain have no impact on soil fertility
4
Rain water with pH of less than 5-6 is referred as acid rain
12
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Given below are two statements:
Statement I: Los Angeles smog event was a suitable example of photochemical smog.
Statement II: Photochemical smog formation requires NOx, volatile organic compounds and intense sun light in which peroxy acetyl nitrate is one of the byproducts.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I: Los Angeles smog event was a suitable example of photochemical smog.
Statement II: Photochemical smog formation requires NOx, volatile organic compounds and intense sun light in which peroxy acetyl nitrate is one of the byproducts.
In the light of the above statements, choose the most appropriate answer from the options given below:
1
Both Statement I and Statement II are correct
2
Both Statement I and Statement II are incorrect
3
Statement I is correct but Statement II is incorrect
4
Statement I is incorrect but Statement II is correct
13
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Which of the following metal is used in wood preservatives ?
1
Mercury
2
Lead
3
Arsenic
4
Selenium
14
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Catalytic convertors in vehicle are used for -
1
Oxidation of CO and NO
2
Reduction of CO and NO
3
Oxidation of CO and reduction of NO
4
Reduction of CO and oxidation of NO
15
PYQ 2023
medium
environmental-studies ID: cuet-pg-
Noise levels in environment are measured in
1
Dobson unit
2
Decibel unit
3
Grambel unit
4
Hertz unit