ECOLOGY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

ECOLOGY EXAMINATION QUESTIONS AND CORRECT
ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE
SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Ecology is the study of:
A. Interactions between organisms and their environment
B. Only animals
C. Only plants
D. Rocks only
Answer: A
Rationale: Ecology focuses on relationships in nature.

2. The basic unit of ecology is:
A. Ecosystem
B. Atom
C. Cell only
D. Molecule
Answer: A
Rationale: Ecosystem includes living and non-living components.

3. An ecosystem includes:
A. Biotic and abiotic factors
B. Only plants
C. Only animals
D. Only soil
Answer: A
Rationale: Both living and non-living components interact.

4. Biotic factors are:
A. Living organisms
B. Non-living things
C. Weather only
D. Soil only
Answer: A
Rationale: Biotic = living components.

5. Abiotic factors are:
A. Non-living environmental components

, B. Animals
C. Plants
D. Microorganisms
Answer: A
Rationale: Abiotic = physical environment.

6. Habitat is:
A. Natural home of an organism
B. Food chain
C. Climate only
D. Soil type only
Answer: A
Rationale: Place where organisms live.

7. Niche refers to:
A. Role of an organism in ecosystem
B. Habitat location
C. Weather condition
D. Soil type
Answer: A
Rationale: Functional role in ecosystem.

8. Population is:
A. Group of same species in an area
B. All animals
C. All plants
D. All organisms worldwide
Answer: A
Rationale: Same species group.

9. Community is:
A. All populations in an area
B. One species
C. Only plants
D. Only animals
Answer: A
Rationale: Multiple species together.

10. Ecosystem includes:
A. Community plus environment

, B. Only animals
C. Only plants
D. Only water
Answer: A
Rationale: Biotic + abiotic factors.

11. Biosphere is:
A. All ecosystems on Earth
B. One forest
C. One ocean
D. One desert
Answer: A
Rationale: Global life zone.

12. Energy in ecosystems comes mainly from:
A. Sun
B. Soil
C. Wind
D. Water
Answer: A
Rationale: Sun drives photosynthesis.

13. Producers are:
A. Organisms that make their own food
B. Animals
C. Decomposers
D. Parasites
Answer: A
Rationale: Autotrophs like plants.

14. Consumers are:
A. Organisms that eat others
B. Plants
C. Sunlight users
D. Soil organisms only
Answer: A
Rationale: Heterotrophs.

15. Decomposers:
A. Break down dead matter