CERTIFICATION EXAM QUESTIONS AND ORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
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1. What is ecology the study of?
A. The structure of atoms
B. The interaction between organisms and their environment
C. The classification of rocks
D. The movement of planets
Correct Answer: B
Rationale: Ecology focuses on how living organisms interact
with each other and with their physical environment.
2. Which level of ecological organization is the largest?
A. Population
B. Community
C. Ecosystem
D. Biosphere
Correct Answer: D
Rationale: The biosphere includes all ecosystems on Earth,
making it the highest level of organization.
,3. A group of the same species living in one area is called a:
A. Community
B. Population
C. Ecosystem
D. Habitat
*Correct Answer: Population
Rationale: A population consists of individuals of the same
species in a specific area.
4. What is a habitat?
A. The role of an organism in its environment
B. The place where an organism lives
C. A group of interacting species
D. A non-living factor in the environment
Correct Answer: B
Rationale: A habitat is the natural home or environment of an
organism.
5. The role of an organism in its ecosystem is called its:
A. Habitat
B. Niche
C. Biome
D. Biosphere
,*Correct Answer: Niche
Rationale: A niche includes the organism’s role, diet, and
interactions in the ecosystem.
6. Which is an abiotic factor?
A. Grass
B. Bacteria
C. Temperature
D. Fish
Correct Answer: C
Rationale: Abiotic factors are non-living components like
temperature, water, and sunlight.
7. Which is a biotic factor?
A. Soil
B. Sunlight
C. Wind
D. Trees
*Correct Answer: Trees
Rationale: Biotic factors are living components of an
ecosystem.
8. What is an ecosystem?
, A. Only animals in an area
B. Only plants in an area
C. Living organisms and their physical environment interacting
together
D. A single species population
Correct Answer: C
Rationale: Ecosystems include both biotic and abiotic
components interacting.
9. Producers in an ecosystem are usually:
A. Animals
B. Plants
C. Fungi
D. Carnivores
*Correct Answer: Plants
Rationale: Producers make their own food through
photosynthesis.
10. Which process do plants use to make food?
A. Respiration
B. Digestion
C. Photosynthesis
D. Fermentation