An organism’s relationship in a food web as they occur in marine, freshwater, and terrestrial ecosystems is described as:

• Symbiotic interactions only

• Trophic interactions such as predation, competition, and mutualism

• Non-interactive coexistence

• Unidirectional relationships

What are the levels of organization in an ecosystem as shown in the diagram?

• Individual, Population, Community, Ecosystem, Biosphere

• Organ, Tissue, Cell, Organism, Population

• Atom, Molecule, Cell, Organism, Biosphere

• Species, Habitat, Community, Ecosystem, Biosphere

The purpose of these instructions is to provide guidance.

• To provide guidance

• To confuse users

• To entertain users

• To serve as a decoration

Fill in the blank: An organism is an individual ______, plant, or single-celled life form.

• organism

• creature

• entity

• being

What is a population?

• A group of individuals of the same species inhabiting the same area.

• A group of individuals of the same species living in different regions.

• A collection of organisms from various species sharing the same habitat.

• A random assembly of organisms without any shared ecological characteristic.

A community in ecological terms is the interacting populations of various species living together in a particular area.

• The interacting populations of various species living together in a particular area.

• A single-species group living in isolation.

• An individual organism in its habitat.

• A collection of unrelated species living in different areas.

Which of the following species is part of the Rain Forest Community?

• Harpy Eagle

• Polar Bear

• Penguin

• Kangaroo

Fill in the blank: In an ecosystem, a _______ is an organism that is hunted and eaten by predators.

• prey

• predator

• scavenger

• producer

Fill in the blank: A _______ is an organism that lives on or in a host and gets its food at the expense of its host.

• parasite

• predator

• commensal

• decomposer

Fill in the blank: The _______ is the role or function of an organism or species in an ecosystem.

• niche

• habitat

• environment

• community