Symbiosis Interactions Between Organisms MS-LS2-2

Grade 7 - NGSS - CA

The largest population that an environment can support

Carrying capacity

The largest population that an environment can support. Carrying capacity. In simple terms, carrying capacity is the maximum number of living things that can survive in a specific area without causing harm to the environment.

A relationship where one species benefits but the other is neither helped nor harmed

Commensalism

A relationship where one species benefits but the other is neither helped nor harmed. Commensalism. In commensalism, one organism gets help like food or protection, while the other organism is just there and not affected.

A species critical to the survival of an ecosystem

Keystone species

A species critical to the survival of an ecosystem. Keystone species. A keystone species is an important animal or plant that helps keep balance in its ecosystem.

A symbiotic relationship between two species in which both benefit

Mutualism

A symbiotic relationship between two species in which both benefit. Mutualism. Mutualism is when two different species help each other and both get advantages for survival.

A symbiotic relationship where one organism benefits and the other is harmed

Parasitism

A symbiotic relationship where one organism benefits and the other is harmed. Parasitism. Parasitism is when one organism lives on or in another organism, taking nutrients and causing harm.

An animal that hunts and eats other animals

Predator

An animal that hunts and eats other animals. Predator. A predator is an animal that catches and eats other animals for food.

An animal hunted and eaten by a predator

Prey

An animal hunted and eaten by a predator prey. Prey refers to animals that are chased and eaten by other animals.

The close relationship between organisms of different species

Symbiosis

The close relationship between organisms of different species. Symbiosis. Symbiosis is when two different species live together and help each other to survive.