PRINCIPLES OF ECOLOGY: KEY CONCEPTS AND
INTERACTIONS EXAM QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS UPDATED 2025/2026
BEST RATED A+ FOR PASS
What is the Greek origin of the word 'Ecology'?
'Oikos' meaning house and '-logy' meaning the study.
Who first defined the term 'Ecology'?
German biologist Ernst Haeckel in 1866.
What do ecologists study?
Interactions between organisms and their environment,
including species interactions, biodiversity, energy flow,
and human impact.
What are the types of species interactions?
Predation, mutualism, parasitism, commensalism, and
competition.
What does biodiversity indicate?
A diverse range of life indicates ecosystem health.
What is energy flow in ecosystems?
Energy from the sun is transformed and moves through
ecosystems via food webs.
, PRINCIPLES OF ECOLOGY: KEY CONCEPTS AND
INTERACTIONS EXAM QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS UPDATED 2025/2026
BEST RATED A+ FOR PASS
What is ecological succession?
The process by which ecosystems change in biodiversity
and nutrient availability over time.
What is the ecological hierarchy from smallest to largest?
Organism, population, community, ecosystem, biome,
biosphere.
What is a population in ecology?
Several members of a species in one area.
What is a community in ecology?
Groups of populations all within the same geographic
area.
What is an ecosystem?
All communities together with the abiotic factors that
affect them.
What is a biome?
A large regional area with the same climate.
INTERACTIONS EXAM QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS UPDATED 2025/2026
BEST RATED A+ FOR PASS
What is the Greek origin of the word 'Ecology'?
'Oikos' meaning house and '-logy' meaning the study.
Who first defined the term 'Ecology'?
German biologist Ernst Haeckel in 1866.
What do ecologists study?
Interactions between organisms and their environment,
including species interactions, biodiversity, energy flow,
and human impact.
What are the types of species interactions?
Predation, mutualism, parasitism, commensalism, and
competition.
What does biodiversity indicate?
A diverse range of life indicates ecosystem health.
What is energy flow in ecosystems?
Energy from the sun is transformed and moves through
ecosystems via food webs.
, PRINCIPLES OF ECOLOGY: KEY CONCEPTS AND
INTERACTIONS EXAM QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS UPDATED 2025/2026
BEST RATED A+ FOR PASS
What is ecological succession?
The process by which ecosystems change in biodiversity
and nutrient availability over time.
What is the ecological hierarchy from smallest to largest?
Organism, population, community, ecosystem, biome,
biosphere.
What is a population in ecology?
Several members of a species in one area.
What is a community in ecology?
Groups of populations all within the same geographic
area.
What is an ecosystem?
All communities together with the abiotic factors that
affect them.
What is a biome?
A large regional area with the same climate.
