Page 75 - Science Course 3 (Book 1)

6. Commensalism is a symbiotic relationship in which one organism benefits while
the other is harmed.

7. When mutualism occurs, disease can spread rapidly and the environment can be
damaged.

8. A symbiotic relationship in which both organisms benefit is called a(n) niche.

Mo2-L4: Key Concept Organizer

Direction: Complete the concept map by placing the letter for the correct term, phrase, or statement from
the word bank in the space provided. Each term, phrase, or statement is used only once.

A. a close, long-term relationship between two species that usually involves obtaining food and energy
B. Both organisms benefit.
C. commensalism
D. competition
E. One organism benefits but the other does not benefit and is not harmed.
F. parasitism G. predation

Types
of interactions

symbiosis

Organisms
need the same
A predator
abiotic or biotic factor feeds on a prey
at the same time

mutualism

One
organism benefits
while the other is
harmed.

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