Download the body of a cnidarian

NAME:______________________________
LAB
CHAPTER 23
SECTION 23.3 Cnidarians Are Radial Animals With Stinging Cells
OBJECTIVES
Describe the general characteristics of cnidarians
Compare and contrast the body structure of a hydra with that of a marine jelly
KEY TERMS
CNIADARIAN
RASIAL SYMMETRY
CNIDOCYTE
NEMATOCYST
GASTROVASCULAR CAVITY
POLYP
MEDUSA
THE BODY OF A CNIDARIAN
List some examples of cnidarians provided in the first paragraph:
Two characteristics all cnidarians share are:
1.
2.
Animals with radial symmetry lack a ____________.
Most cnidarians are slow moving or __________________.
The are found:
All cnidarians have specialized stinging cells used for __________________ and
__________________________.
How do the nematocyst tubules vary in some cnidarians?
Where is a cnidarian’s mouth?
Where does undigested food and waste exit a cnidarian?
Cnidarians form a _____________ during development, while sponges do not.
Cnidarian tissues include an ___________________ and a ____________________
which enables them to respond to stimuli and coordinate movements.
DIVERSITY OF CNIDARIANS
There are ________________ known species of cnidarians.
The two body forms of cnidarians include __________________ (ex:_____________)
and _______________ (ex:__________________.)
List the three CLASSES and examples of cnidarians discussed in the last paragraph.
Class
Example
1.
2.
3.
Concept Check 23.3 p 501
Questions 1-3