Question 1
In ecology, what is the best distinction between a habitat and a niche?
Correct Answer:
A habitat is where an organism lives; a niche is its role and resource use
Question 2
Why does less energy usually reach each higher trophic level in a food chain?
Correct Answer:
Most energy is lost as heat through metabolism and maintenance
Question 3
A bee obtains nectar while pollinating a flowering plant. Which relationship is most directly illustrated?
Correct Answer:
Mutualism
Question 4
A lake supports about the same maximum biomass of fish year after year unless nutrient levels or habitat change. What ecological idea does this best represent?
Correct Answer:
Carrying capacity
Question 5
Which situation is the clearest example of primary succession?
Correct Answer:
Lichens and mosses colonize newly exposed bare rock
Question 1
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About this Exam

Prepare with the DSST Environmental Science Practice Questions - Environmental Science Exam practice quiz. This question bank includes 100 questions covering species, population, habitat, energy, and food. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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DSST Environmental Science Practice Questions - Environmental Science Exam

This practice set contains 100 questions from the matching question bank and focuses on species, population, habitat, energy, and food. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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