Environmental Biology Practice Test | Environmental Science Quiz

1.Most plants can absorb nitrogen only in the form of
Nitrite ion
Dinitrogen ion
Ammonium ion
Nitrate ion

2.With the change in environmental conditions, species that are not adapted to such changed conditions disappear. This phenomenon is called
Natural extinction
Mass extinction
Species migration
Anthropogeniconic extinction

3.Which zone of pond/lake ecosystem does not receive light?
Littoral
Limnetic
Profundal
Epilimnion

4.Influx of high nutrient load of nitrates and phosphates into an aquatic ecosystem contibutes towards
Oligotrophication
Poor primary production
Extreme oligotrophication
Eutrophication

5.Which group of microorganisms dominate in glacial ecosystem?
Psychrophiles
Acidophiles
Thermophiles
Mesophiles

6.The abilty of an ecosyem to recover when the system has been ditributed by any perturbation is known as
Resistance
Homeostasis
Climax
Resilience

7.Two of the following biomes has the largest area?
Taiga
Desert
Rain forest
Grassland

8. Two important characteristics of any populations are
Diversity and density
Frequncy and density
Density and dispersion
Abundance and Dispersion

9.The largest unit, in which gene is possible, is
Population
Genus
Family
Species

10. Which forest type has the highest percentage cover in the county
Tropical deciduous
Mangrove
Tropcical evergreen
temperate deciduous

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Correct answers:

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