Ecology and Ecosystems Multiple Choice Questions

The functional unit of nature is known as:

• Species

• Population

• Ecosystem

• Community

Who coined the term “ecosystem”?

• A.G. Tansley

• Odum

• Haeckel

• Warming

Which of the following is a biotic component of an ecosystem?

• Light

• Temperature

• Producers

• Water

The pyramid of energy in any ecosystem is always:

• Inverted

• Upright

• Both (a) and (b)

• None of these

Decomposers play an important role in:

• Photosynthesis

• Nutrient cycling

• Respiration

• Transpiration

The process of conversion of ammonium compounds into nitrates is called:

• Nitrification

• Denitrification

• Ammonification

• Nitrogen fixation

Which of the following is a detritivore?

• Earthworm

• Cow

• Goat

• Deer

In an ecosystem, the energy flow is:

• Cyclic

• Unidirectional

• Multidirectional

• None of these

Primary producers in an aquatic ecosystem are:

• Fish

• Zooplankton

• Phytoplankton

• Insects

Which ecosystem has the highest productivity?

• Desert

• Tundra

• Coral reef

• Grassland