The type of soil the desert biome has is
  • Porous with thin layers of humus
  • Rich in nutrients with little organic matter
  • Acidic, poor in nutrients
  • Fertile alluvial
When various plants and animal species have got adapted through evolution is called:
  • Ecological adaptation
  • Hydrological adaptation
  • Homological adaptation
  • None of the above
Mineral salts come directly from
  • Earth crust
  • Water cycle
  • Atmosphere
  • Forest biome
The boundaries of different biomes on land are determined mainly by
  • Climate
  • Temperature
  • Human activities
  • Humidity
Temperate Steppe is a subtype of which biome?
  • Forest
  • Desert
  • Grassland
  • Aquatic
Which includes all the living components of the earth.
  • Hydrosphere
  • Atmosphere
  • Biosphere
  • Lithosphere
A freshwater ecosystem is
  • Oceans
  • Estuaries
  • Coral reefs
  • Marshes
Which is a plant and animal community that covers a large geographical area?
  • Biosphere
  • Biome
  • Marshes
  • Prairies
Abiotic factors include
  • Producers
  • Consumers
  • Decomposers
  • Sunlight
Which of the following organism have a parasitic mode of nutrition?
  • Penicillium
  • Plasmodium
  • Paramecium
  • Parrot
The earliest man on the earth is known as:
  • Homoerectus
  • Homosapien
  • Homophobic
  • None of the above
Freshwater ecosystem includes
  • Oceans
  • Coastal estuaries
  • Coral reefs
  • Streams
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