Name: 
 

Holt CH. 18 Vocabulary Exam



Matching
 
 
a.
Ecology
l.
Food Web
b.
Biotic
m.
Energy Pyramid
c.
Abiotic
n.
Carrying Capacity
d.
Population
o.
Prey
e.
Community
p.
Predator
f.
Ecosystem
q.
Symbiosis
g.
Biosphere
r.
Mutualism
h.
Herbivore
s.
Commensalism
i.
Carnivore
t.
Parasitism
j.
Omnivore
u.
Coevolution
k.
Food Chain
 

 1. 

An organism that is killed and eaten by another organism.
 

 2. 

The pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms.
 

 3. 

All of the populations of a species that live in the same habitat and interact with each other.
 

 4. 

The evolution of two species that is due to mutual influence, often in a way that makes the relationship more beneficial to both species.
 

 5. 

Describes the nonliving part of the environment, including water, rocks, light, and temperature.
 

 6. 

A diagram that shows the feeding relationships between organisms in an ecosystem.
 

 7. 

A relationship in which two different organisms live in close association with each other.
 

 8. 

A community of organisms and their abiotic, or nonliving, environment.
 

 9. 

A relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed.
 

 10. 

The study of the interactions of living organisms with one another and with their environment.
 

 11. 

A triangular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain.
 

 12. 

An organism that eats only plants.
 

 13. 

The part of earth where life exists.
 

 14. 

Describes living factors in the environment.
 

 15. 

A relationship between two organisms in which one organism benefits and the other is unaffected.
 

 16. 

An organism that eats both plants and animals.
 

 17. 

A relationship between two species in which both species benefit.
 

 18. 

A group of organisms of the same species that live in a specific geographical area.
 

 19. 

An organism that kills and eats all or part of another organism.
 

 20. 

An organism that eats animals.
 

 21. 

The largest population that an environment can support at any given time.
 



 
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