Ecosystem MCQs with Answers

Past Paper MCQ

The most naturally occurring event in Nutrient Cycle is _?

• A.Nitrogen Fixation
• B.Decomposition
• C.Photosynthesis
• D.Evaporation

Past Paper MCQ

Which of the following is not included in in-situ conservation?

• A.National Park
• B.Wildlife Sanctuary
• C.Biosphere Reserve
• D.Botanical Garden

The factors which determine the number and types of organisms in a system are known as?

• A.Limiting factors
• B.Biotic factors
• C.Climatic factors
• D.Edaphic factors

Which of the following processes is not involved in the carbon cycle?

• A.Photosynthesis
• B.Respiration
• C.Transpiration
• D.Decomposition

The relationship between two organisms where both are benefited and neither is harmed is called _?

• A.Commensalism
• B.Parasitism
• C.Mutualism
• D.Predation

Returning a habitat to its historic condition is called?

• A.Restoration
• B.Reclamation
• C.Rehabilitation
• D.Regeneration

Which of the following populations follow logistic growth model?

• A.Populations that never reach carrying capacity
• B.Populations with unlimited resources
• C.Populations that show exponential growth indefinitely
• D.Populations that grow within limited resources

Which of the following is an incorrect comparison between tropical rainforests and temperate grasslands regarding the decomposition of organic matter?

• A.Decomposition occurs faster in tropical rainforests than in temperate grasslands.
• B.Warm, moist conditions in tropical rainforests accelerate microbial decomposition.
• C.Tropical rainforests accumulate more organic matter on the forest floor than temperate grasslands.
• D.Temperate grasslands have a thicker layer of humus-rich topsoil due to slower decomposition.

The relationship where bacteria digest cellulose in an animal's stomach, providing food and shelter, is called?

• A.Commensalism
• B.Parasitism
• C.Mutualism
• D.Predation

The total quantity of living matter in a given area or ecosystem is ?

• A.Bioenergy
• B.Biodiversity
• C.Biomass
• D.Biome