Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
21. For the biomagnification of a particle to occur which of the following conditions should exist?
[A] Water soluble
[B] Short- lived
[C] Biologically active
[D] Immobile
Show Answer
Correct Answer: C [Biologically active]
Notes:
Biomagnification refers to the tendency of pollutant to concerntrate as they move from one trophic level to another. For biomagnification to take place a particle should be biologically active and mobile so that it can move to the higher level, it should be long-lived and soluble in fat.
22. Which of the following is true about Estuary?
[A] It is the ecosystem marked by the mixing of sea water and river water
[B] They are always marked by very low salinity
[C] Both
[D] None
Show Answer
Correct Answer: A [It is the ecosystem marked by the mixing of sea water and river water]
Notes:
Estuary is the ecosystem marked by the mixing of marine and fresh water. It is a semi- closed coastal body with opening to sea. A range of salinity is found in the estuary ranging from 0-35 ppt.
23. Heliophytes term is used for –
[A] Sun loving plants
[B] Shade loving plants
[C] Saline plants
[D] None of the above
Show Answer
Correct Answer: A [Sun loving plants]
Notes:
Heliophytes are sun loving plants. These are those that require full exposure to sun for their development. Example- mullein, ling, thyme and soft velcro, white clover, and most roses
24. Which of the following is true about Nandur Madumeshwar bird sanctuary?
[A] Godavari river flows across the sanctuary
[B] It is located in Maharashtra
[C] It has been designated under Ramsar list of Wetlands
[D] All of the above are true
Show Answer
Correct Answer: D [All of the above are true]
Notes:
Nandur Madumeshwar Bird Sanctuary has been designated as wetland of international importance under Ramsar convention. It is located in Maharashtra across Godavari river.
25. Which of the following is true about the Suspended Particulate Matter?
- These consist of solid particles only that remain suspended in the air
- These particles can be removed by wet scrubbers
Select the correct answer from the codes given below-
[A] 1 only
[B] 2 only
[C] Both
[D] None
Show Answer
Correct Answer: B [2 only]
Notes:
Suspended Particulate Matters are the hazardous substances that includes solid and liquid particles being suspended in the air. These includes both organic and inorganic matters. Wet scrubbers can remove the SPMs as the particles are dissolved in the liquid and ultimately released to be reused.
26. Where in India the Tropical Wet Evergreen forests are not found?
[A] North East Region
[B] Western and eastern Ghats
[C] Andaman and Nicobar island
[D] Deccan Plateau
Show Answer
Correct Answer: D [Deccan Plateau]
Notes:
Tropical wet evergreen forests are found in areas of high rainfall. They are found in north- east region, Western and eastern ghats and north east region.
27. Which of the following is true about Convention on Migratory Species?
- It covers only avians which migrates
- It is under the United Nations Environment Program.
Select the correct answer from the codes given below
[A] 1 only
[B] 2 only
[C] Both
[D] None
Show Answer
Correct Answer: B [2 only]
Notes:
The Convention on Migratory Species was enforced in 1983 in Bonn, Germany and aims to protect all terrestrial, avian and aquatic migratory species. It is the only such legally binding treaty and is under UNEP.
28. Which of the following mentioned texts mentions that air, land, water, and seasons were indispensable for life?
[A] Brihat Samhita
[B] Charaka Samhita
[C] Sushruta Samhita
[D] Deva Samhita
Show Answer
Correct Answer: B [Charaka Samhita]
Notes:
The Indian treatise on medicine Charaka- Samhita contains information that air, land, water, and seasons were indispensable for life. It also mentions that polluted air and water are injurious to health.
29. The differences between the various aquatic zones are a result of which of the following factors?
1. Salinity
2. Levels of dissolved nutrients
3. Water temperature
4. Depth of sunlight penetration
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2, 3 & 4
[C] Only 1, 2 & 4
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: D [1, 2, 3 & 4]
Notes:
The differences between the various aquatic zones are a result of the following factors:
1. Salinity
2. Levels of dissolved nutrients
3. Water temperature
4. Depth of sunlight penetration
30. Which of the following statements are correct regarding pyramid of biomass?
1. Pyramid of biomass has a large base of primary producers with a smaller trophic level perched on top.
2. It shows the total dry weight of all organisms at each trophic level at a particular time.
3. Biomass is measured in g/m2.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
It shows the total dry weight of all organisms at each trophic level at a particular time. Biomass is measured in g/m2. Pyramid of biomass has a large base of primary producers with a smaller trophic level perched on top.
