Science & Technology·MCQ Practice
Ecology and Environment — MCQ Practice
Updated 19 Oct 2026
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.
Q1medium
An ecosystem has GPP 900 and producer respiration 350 in matching energy units per area per year. What is NPP?
Q2medium
A survey reports standing plant biomass on one date. Which additional information is needed to express primary productivity?
Q3medium
An orchid gains support by growing on a mango tree without a demonstrated benefit or injury to the tree. Which interaction fits the stated evidence?
Q4medium
Habitat degradation reduces food and nesting resources for a population previously near carrying capacity. Which inference is most defensible?
Q5medium
Which comparison correctly distinguishes energy and nutrients in an ecosystem?