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Ecology and Ecosystems Online MCQs with Answers
What is the study of the interactions between organisms and their environment called?
a) Ecology
b) Genetics
c) Evolution
d) Zoology
Which of the following is a biotic factor in an ecosystem?
a) Temperature
b) Soil pH
c) Sunlight
d) Plants
What is the role of decomposers in an ecosystem?
a) Produce food through photosynthesis
b) Prey on other organisms
c) Break down dead organic matter
d) Regulate the temperature of the environment
What is the primary source of energy in most ecosystems?
a) Sunlight
b) Geothermal heat
c) Chemical reactions
d) Wind power
Which of the following is an example of a population?
a) All the plants and animals in a forest
b) A group of individuals of the same species living in a particular area
c) A community of different species interacting with each other
d) The entire biosphere
What is the term for the variety of life in an ecosystem, including the diversity of species, genes, and ecosystems?
a) Biodiversity
b) Community
c) Ecosystem
d) Niche
Which of the following is an abiotic factor in an ecosystem?
a) Plants
b) Temperature
c) Predators
d) Producers
What is the term for the role or function of an organism in an ecosystem?
a) Population
b) Habitat
c) Niche
d) Biotic factor
What is the process by which organisms produce their own food using energy from sunlight called?
a) Photosynthesis
b) Respiration
c) Decomposition
d) Predation
What is the term for a group of different species living and interacting with each other in a particular area?
a) Population
b) Ecosystem
c) Niche
d) Community
Which of the following is an example of a consumer in a food chain?
a) Grass
b) Rabbit
c) Sunlight
d) Producer
What is the term for a feeding relationship in which one organism is consumed by another?
a) Symbiosis
b) Competition
c) Predation
d) Mutualism
Which of the following is an example of a primary consumer?
a) Hawk
b) Snake
c) Grasshopper
d) Lion
What is the term for the process by which nutrients are transferred from one trophic level to another in a food chain?
a) Energy flow
b) Biomagnification
c) Nutrient cycling
d) Trophic cascade
Which of the following is an example of a decomposer?
a) Grass
b) Lion
c) Mushroom
d) Rabbit
What is the term for a group of individuals of the same species living in a particular area?
a) Population
b) Ecosystem
c) Community
d) Niche
Which of the following is an example of an omnivore?
a) Lion
b) Deer
c) Hawk
d) Bear
What is the term for the transfer of energy from one trophic level to the next in a food chain?
a) Biomagnification
b) Energy flow
c) Nutrient cycling
d) Trophic cascade
Which of the following is an example of a tertiary consumer?
a) Rabbit
b) Snake
c) Grasshopper
d) Hawk
What is the term for the process by which individuals of the same species compete for limited resources?
a) Predation
b) Symbiosis
c) Mutualism
d) Intraspecific competition
Which of the following is an example of a pioneer species?
a) Grass
b) Oak tree
c) Deer
d) Lion
What is the term for the study of the distribution and abundance of organisms and the factors that influence their distribution and abundance?
a) Ecology
b) Genetics
c) Evolution
d) Botany
Which of the following is an example of a keystone species?
a) Grass
b) Rabbit
c) Lion
d) Bees
What is the term for the process by which individuals of different species rely on each other for resources or services?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a secondary consumer?
a) Grasshopper
b) Hawk
c) Lion
d) Rabbit
What is the term for the variety of different species in an ecosystem?
a) Habitat diversity
b) Species diversity
c) Genetic diversity
d) Ecosystem diversity
Which of the following is an example of a producer?
a) Deer
b) Hawk
c) Grass
d) Lion
What is the term for the process by which individuals of different species compete for the same resources?
a) Predation
b) Symbiosis
c) Competition
d) Mutualism
Which of the following is an example of a detritivore?
a) Lion
b) Grasshopper
c) Mushroom
d) Deer
What is the term for the specific role or function of a species within an ecosystem?
a) Habitat
b) Niche
c) Community
d) Population
Which of the following is an example of a habitat?
a) A particular tree
b) A particular pond
c) A particular species
d) A particular trophic level
What is the term for the process by which one organism benefits while the other is unaffected?
a) Predation
b) Competition
c) Commensalism
d) Mutualism
Which of the following is an example of a keystone species?
a) Grass
b) Oak tree
c) Deer
d) Sea otter
What is the term for the movement of individuals into a population from other areas?
a) Immigration
b) Emigration
c) Natality
d) Mortality
Which of the following is an example of a top predator in a food chain?
a) Grass
b) Rabbit
c) Hawk
d) Deer
What is the term for the process by which individuals of different species mutually benefit from their interaction?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a primary producer?
a) Hawk
b) Deer
c) Grass
d) Lion
What is the term for the process by which individuals of the same species compete for limited resources?
a) Symbiosis
b) Competition
c) Mutualism
d) Intraspecific competition
Which of the following is an example of a consumer in a food chain?
a) Grass
b) Rabbit
c) Sunlight
d) Producer
What is the term for the study of the relationships between organisms and their environment?
a) Ecology
b) Genetics
c) Evolution
d) Botany
Which of the following is an example of a population?
a) All the plants and animals in a forest
b) A group of individuals of the same species living in a particular area
c) A community of different species interacting with each other
d) The entire biosphere
What is the term for a group of different species living and interacting with each other in a particular area?
a) Population
b) Ecosystem
c) Niche
d) Community
Which of the following is an example of a decomposer?
a) Grass
b) Lion
c) Mushroom
d) Rabbit
What is the term for a feeding relationship in which one organism is consumed by another?
a) Symbiosis
b) Competition
c) Predation
d) Mutualism
Which of the following is an example of a primary consumer?
a) Hawk
b) Snake
c) Grasshopper
d) Lion
What is the term for the process by which nutrients are transferred from one trophic level to another in a food chain?
a) Energy flow
b) Biomagnification
c) Nutrient cycling
d) Trophic cascade
Which of the following is an example of a decomposer?
a) Grass
b) Lion
c) Mushroom
d) Rabbit
What is the term for the specific role or function of a species within an ecosystem?
a) Habitat
b) Niche
c) Community
d) Population
Which of the following is an example of an omnivore?
a) Lion
b) Deer
c) Hawk
d) Bear
What is the term for the process by which individuals of different species rely on each other for resources or services?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a pioneer species?
a) Grass
b) Oak tree
c) Deer
d) Lion
What is the term for the study of the distribution and abundance of organisms and the factors that influence their distribution and abundance?
a) Ecology
b) Genetics
c) Evolution
d) Botany
Which of the following is an example of a keystone species?
a) Grass
b) Rabbit
c) Lion
d) Bees
What is the term for the process by which individuals of different species mutually benefit from their interaction?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a secondary consumer?
a) Grasshopper
b) Hawk
c) Lion
d) Rabbit
What is the term for the movement of individuals into a population from other areas?
a) Immigration
b) Emigration
c) Natality
d) Mortality
Which of the following is an example of a top predator in a food chain?
a) Grass
b) Rabbit
c) Hawk
d) Deer
What is the term for the process by which individuals of different species mutually benefit from their interaction?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a primary producer?
a) Hawk
b) Deer
c) Grass
d) Lion
What is the term for the process by which individuals of the same species compete for limited resources?
a) Symbiosis
b) Competition
c) Mutualism
d) Intraspecific competition
Which of the following is an example of a pioneer species?
a) Grass
b) Oak tree
c) Deer
d) Lion
What is the term for the study of the distribution and abundance of organisms and the factors that influence their distribution and abundance?
a) Ecology
b) Genetics
c) Evolution
d) Botany
Which of the following is an example of a keystone species?
a) Grass
b) Rabbit
c) Lion
d) Bees
What is the term for the process by which individuals of different species rely on each other for resources or services?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a secondary consumer?
a) Grasshopper
b) Hawk
c) Lion
d) Rabbit
What is the term for the movement of individuals into a population from other areas?
a) Immigration
b) Emigration
c) Natality
d) Mortality
Which of the following is an example of a top predator in a food chain?
a) Grass
b) Rabbit
c) Hawk
d) Deer
What is the term for the process by which individuals of different species mutually benefit from their interaction?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a primary producer?
a) Hawk
b) Deer
c) Grass
d) Lion
What is the term for the process by which individuals of the same species compete for limited resources?
a) Symbiosis
b) Competition
c) Mutualism
d) Intraspecific competition
Which of the following is an example of a pioneer species?
a) Grass
b) Oak tree
c) Deer
d) Lion
What is the term for the study of the distribution and abundance of organisms and the factors that influence their distribution and abundance?
a) Ecology
b) Genetics
c) Evolution
d) Botany
Which of the following is an example of a keystone species?
a) Grass
b) Rabbit
c) Lion
d) Bees
What is the term for the process by which individuals of different species rely on each other for resources or services?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a secondary consumer?
a) Grasshopper
b) Hawk
c) Lion
d) Rabbit
What is the term for the movement of individuals into a population from other areas?
a) Immigration
b) Emigration
c) Natality
d) Mortality
Which of the following is an example of a top predator in a food chain?
a) Grass
b) Rabbit
c) Hawk
d) Deer
What is the term for the process by which individuals of different species mutually benefit from their interaction?
a) Predation
b) Competition
c) Symbiosis
d) Mutualism
Which of the following is an example of a primary producer?
a) Hawk
b) Deer
c) Grass
d) Lion
What is the term for the process by which individuals of the same species compete for limited resources?
a) Symbiosis
b) Competition
c) Mutualism
d) Intraspecific competition