Ecology and Ecosystems Mock Exam MCQ

Which of the following is an example of a mutualistic relationship?

• A flea on a dog

• A bee pollinating a flower

• A lion hunting a zebra

• A shark eating a fish

What type of sampling technique would you use to capture aquatic insects in a pond?

• Quadrat

• Line transect

• Jar sampling

• Net sampling

Which term best describes the relationship between a lion and a gazelle?

• Predator-prey

• Symbiotic

• Parasitic

• Mutualistic

Which sampling method involves capturing an organism, marking it, releasing it, and later recapturing it to estimate population size?

• Line transect

• Capture-mark-release

• Pooter sampling

• Net sampling

What is the correct order of a typical food chain?

• Producer → Primary Consumer → Secondary Consumer → Decomposer

• Primary Consumer → Producer → Secondary Consumer → Decomposer

• Secondary Consumer → Producer → Primary Consumer → Decomposer

• Producer → Decomposer → Primary Consumer → Secondary Consumer

Which tool is best suited for catching small aquatic organisms from streams or ponds?

• Pooter

• Line transect

• Jar trap

• Net

What is the primary energy source for producers in an ecosystem?

• Water

• Sunlight

• Oxygen

• Carbon dioxide

In a food chain, what is an organism that feeds only on plants called?

• Carnivore

• Herbivore

• Omnivore

• Decomposer

What role do scavengers play in the ecosystem?

• Produce energy

• Feed on plants

• Consume dead matter

• Pollinate flowers

In capture-mark-release studies, what does the ratio of marked to unmarked individuals help scientists estimate?

• Species diversity

• Population size

• Habitat range

• Birth and death rates