The simplest aquatic ecosystem can be seen in a ____________.
A. River
B. Lake
C. Pond
D. Water Tank
Author: Aroma Ann
A ______________ is formed due to the collection of water in a natural basis or depression in a mountainous area or in plains.
A. Lake
B. Stream
C. Pond
D. Spring
The undesirable change in physical, chemical or biological characteristics of air, land and water is referred as ____________.
A. Pollutants
B. Ecodestructions
C. Pollution
D. All of these
Good urban planning is essential for ______________ land use.
A. Rational
B. Irrational
C. Planned
D. Unplanned
The major reservoir of carbon is ____________.
A. The atmosphere
B. Ocean Bed
C. Plant and animals
D. Rock
The species of plants that play a vital role in controlling the relative abundance of other species in a community are called ____________.
A. Edge species
B. Link species
C. Pioneer species
D. Successional species
E. Keystone species
The order of succession in a hydrosere is ____________.
A. Rooted aquatic plants-> phytoplankton->Free floating stage->Reed swamp stage->Sedge Meadow stage-> wood land stage-> Climax forest
B. Rooted aquatic plants-> phytoplankton->Free floating stage-> Sedge Meadow stage-> Reed swamp stage-> wood land stage-> Climax forest
C. phytoplankton->Rooted aquatic plants->Free floating stage->Reed swamp stage-> wood land stage-> Sedge Meadow stage-> Climax forest
D. phytoplankton->Rooted aquatic plants->Free floating stage->Reed swamp stage->Sedge Meadow stage-> wood land stage-> Climax forest
The biosphere encompasses the total _____________ of living material in a region or the globe.
A. Diversity of species
B. Animal population
C. Photosynthesis
D. Weight
The historical monument that is affected by acid rain is ____________.
A. Taj Mahal
B. Pyramid of Egypt
C. Pisa Tower
D. Golden Temple
In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is ____________.
A. Nekton
B. Zooplankton
C. Phytoplankton
D. Benthos
