Chapter 15 Definitions Flashcards
1
Q
Vertebrate
A
An animal that has a vertebral column
2
Q
Invertebrate
A
An animal that does not have a vertebral column
3
Q
Extinction
A
The state in which a previously-existing species no longer exists on earth
4
Q
Predator
A
An organism that eats other organisms
5
Q
Prey
A
An organism that is eaten by other organisms
6
Q
Biomass
A
The total mass of a group of organisms
7
Q
Symbiosis
A
A close, long-term relationship between different types of organisms
8
Q
Commensalism
A
A close, long-term relationship between different types of organisms in which only one benefits, but the other (or others) experience no harm
9
Q
Parasitism
A
A close, long-term relationship between different types of organisms in which only one benefits, and the other (or others) experience harm
