Characteristics
Classes
???
100
The type of symmetry seen in cnidarians
What is radial symmetry?
100
The class of the TRUE jellies
What is Scyphozoa?
100
The pelagic body form of cnidarians
What is a medusa?
200
The type of digestion in Cnidarians
What is two way digestion?
200
The class that box jellies are in.
Cubozoa
200
The name of the benthic body form
What is polyp?
300
The nervous system in cnidarians
What is the nerve net?
300
The class that is made of mostly colonial animals, some with medusa stages and some without.
What is Hydrozoa?
300
The coiled thread with a barb at the end that shoots out and injects toxins into prey.
What is the nematocyst?
400
The name of the defining characteristic of cnidarians
AND where they are typically found on a cnidarian
What are cnidoblasts (stinging cells) found on tentacles?
400
The cnidarian class with no pelagic life stage.
Anthozoa
400
Draw a cnidarian and label the mouth, tentacles, and body/bell
Answers will vary but should show the labeled parts.
500
Describe the typical life cycle/ reproduction of a cnidarian in class scyphozoa or cubozoa
They alternate between asexual and sexual reproduction. They reproduce sexually as a medusa and asexually as a polyp.
500
Draw a sketch of an cnidarian from each of the four classes. Label which belongs to each class.
Answers will vary.
500
Which class would this cnidarian belong to & why?
Class Hydrozoa
It is a medusa (can't be Anthozoa), it is fully circular (can't be Cubozoa), and it has no oral arms (can't be Scyphozoa).