Name__________________________________
Sponges
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
1)
Which cells in a sponge are primarily responsible for trapping and removing
food particles from circulating water?
1)
2)
A sponge's structural materials (spicules, spongin) are manufactured by the
2)
3)
The minute, needlelike structures that act as a skeletal support system in
sponges are called
3)
4)
The tough protein fibers sometimes found in sponge skeletons are
of a substance called
4)
5)
The water outlet in sponges is known as a/an __________________.
5)
6)
The flagellated cells embedded in the mesohyl of a sponge are called
___________________.
6)
7)
The simplest body plan of sponges is ____________, and the plan characterized
by flagellated canals is ______________.
7)
8)
Thin, epithelial type cells covering the outer surface of sponges are the
________________.
8)
9)
These specialized cells of sponges will secrete fibrillar collagen.
9)
True or False. All digestion in sponges is intracellular.
10)
10)
Explain the digestion process of sponges.
1