Free Forest Ecology MCQs with Answers

• A. Producer and primary consumer
• B. Producer and secondary consumer
• C. Primary consumer and decomposer
• D. Primary and secondary consumer
• E. Producer and decomposer

Explanation: A producer captures energy and a decomposer returns nutrients by breaking down organic matter, allowing a basic ecosystem process to…

• A. Meadow
• B. Forested river bank
• C. Pond
• D. Cave

Explanation: A cave usually receives little or no sunlight, so photosynthetic primary producers cannot generate much organic matter there.

• A. Energy
• B. Number
• C. Biomass
• D. All of these

Explanation: The pyramid of energy is always upright because energy is lost as heat at every trophic transfer, so each higher level contains less…

• A. Primary producer
• B. Primary producer and consumer
• C. Consumer
• D. None of the above

Explanation: Nepenthes is a photosynthetic producer, but its pitcher traps and digests insects to supplement minerals, especially nitrogen.

• A. Steppes grasslands
• B. Tropical grasslands
• C. Prairie grasslands
• D. Temperate grasslands

Explanation: Prairies of North America and steppes of Eurasia are major examples of temperate grasslands.

• A. Functional unit for ecological studies
• B. Group of organisms which form population
• C. Group of plants, which act as the energy suppliers
• D. None of these

Explanation: An ecosystem includes organisms together with their abiotic surroundings and the interactions that transfer energy and cycle materials…

• A. Commensals
• B. Planktons
• C. Fauna and flora
• D. Herbivores

Explanation: Plankton are microscopic organisms that drift with water currents, including phytoplankton such as algae and zooplankton such as tiny…

• A. Artificial ecosystem
• B. Forest ecosystem
• C. Natural ecosystem
• D. Grassland ecosystem

Explanation: A pond is a standard example of a natural ecosystem because organisms interact with the water, soil, air and sunlight without deliberate…

• A. On the lithosphere surface
• B. In the hydrosphere
• C. In the lithosphere and hydrosphere
• D. In the lithosphere, hydrosphere and atmosphere

Explanation: The biosphere includes every region where life occurs, spanning the lower atmosphere, the hydrosphere and the life-supporting parts of the…

• A. Checking pollution
• B. Stabilizing the ecosystem
• C. Fertility of soil
• D. Improving food-web

Explanation: Limiting population growth reduces pressure on food, water, land and other resources, helping maintain ecological balance.

• A. Savana ecosystem
• B. Tundra ecosystem
• C. Taiga ecosystem
• D. None of the aboveGet Study Guides

Explanation: Taiga is characterized by long, severe winters and a short summer growing season lasting only a few months.

• A. Species occupying different overlapping ecosystemsInstall Solar Panels
• B. Closely related species occupying different niche
• C. Unrelated species occupying the same niche
• D. Closely related species occupying the same niche

Explanation: Competition is strongest when species require the same limited resources and occupy the same ecological niche; closely related species…

• A. Both open and closed unit depending upon the biomass present
• B. Open unit
• C. Closed unit
• D. Both open and closed unit depending upon community type

Explanation: An ecosystem is an open system because it exchanges energy and matter with its surroundings, especially sunlight, heat, gases, water and…

• A. Holocoene
• B. Cherposem
• C. Biosystem
• D. Geobiocoenosis

Explanation: Holocoene, biosystem and geobiocoenosis are terms used for an ecosystem or closely related ecological concepts.

• A. A localized association of several plants and animals
• B. Different communities of plants, animals and microbes, together with their physico-chemical environments
• C. Different communities of plants and microbes plus their physico-chemical environments
• D. None of the aboveGet Study Guides

Explanation: An ecosystem combines biotic communities, including plants, animals and microbes, with their physical and chemical environment.

• A. Daubenmire/R.Misra/Koestle
• B. Odum/Kormondy
• C. Weaver and Clements
• D. Tansley

Explanation: Arthur G. Tansley coined the term ecosystem in 1935 to emphasize that organisms and their physical environment form one functional system.

• A. Biotic and abiotic
• B. Weeds and trees
• C. Plants and animals
• D. Frogs and men

Explanation: An ecosystem combines biotic components, such as plants, animals and microorganisms, with abiotic components, such as soil, water, air and…