What is a Host in Biology? - Definition & Overview


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question 1 of 3

If an organism lives off of another organism in a manner that causes the host harm, the host is in a _____ relationship.

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1. If an organism lives off of another organism in a manner that neither harms nor helps the host, the host is in a _____ relationship.

2. When two organisms live together it is called _____?

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About This Quiz & Worksheet

When one organism lives off another, there are several different forms the relationship between the two can take. This quiz and worksheet combination will ask you to fill in the blanks pertaining to these different types of guest/ host relations.

Quiz & Worksheet Goals

You will be quizzed on:

  • The term for when two organisms live together
  • Relationships that cause harm to the host
  • Relationships in which neither party is harmed
  • Parasites and their hosts

Skills Practiced

Be prepared to practice the following study skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on biological hosts
  • Information recall - access the knowledge you've gained regarding how parasites enter their hosts
  • Knowledge application - use your knowledge to determine what type of relationship is represented in given examples

Additional Learning

Further your knowledge by studying the accompanying lesson entitled What is a Host in Biology? - Definition & Overview. This lesson will address these objectives:

  • Define a biological host
  • Understand the role of a parasite
  • Review the effects of a parasite on its host
  • Address the relationship between host and guest that is neither harmful nor beneficial
  • Study an example of a relationship with a host and guest that is not harmful to either entity