Body Structure
Part 1
Part 1
A sponge body is a collection of cells embedded in a jellylike extracellular matrix called____.
A. spongin
B. mesohyl
C. spongocoel
D. osculum
mesohyl
Sponges have ...
a. nervous system
b. digestive system
c. circulatory systems
d. All the above
e. none of the above
none of the above
These sponge cells are thin, flat, epithelial-like (skin-like) cells that cover the exterior surface and some interior surfaces of a sponge.
A. Spongocoel
B. Spongin
C. Pinacocytes
D. Collar cells
Pinacocytes
Sponge egg cell is called...
Oocyte
How many body forms or designs of sponges are there?
3
What 2 structures gives support to the framework(skeleton) of the sponge?
spongin and spicules
The body of sponges are permeated by numerous pores called______.
ostia
These sponge cells are also known as collar cells, have flagella that beat and create a current to circulate water through their bodies for food gathering and respiratory gas exchange.
A. microvilli
B. choanocyte
C. Leucocytes
D. Amoebocytes
Choanocytes
Outer layer of the sponge, protects and supports it.
ectoderm
True or False:
Many sponge species are brightly colored because of pigments in their dermal cells.
True
Adult sponges use this to stick to rocks.
holdfasts
What is the name of the process by which sponges feed?
filter feeding
These cells they have an irregular shape like a protist called an amoeba. They move throughout the mesohyl to carry nutrients to all parts of the sponge.
Archaeocytes or Amoebocytes
Inner layer of the sponge body; lines the spongocoel.
endoderm
Sponges trap and eat food through a process known as ....
phagocytosis
Complete the sentence.
Sponges are _________ and spend their entire adult life anchored to a surface underwater.
sessile
A sponge body forms around a hollow center called the _____.
spongocoel
These sponge cells control water flow through the ostia.
porocytes
What is the "individual division of the sponge body?"
branch
What is the plural form of osculum
oscula
Taxonomists group sponges into three classes based on the composition of their _________.
skeletons
The opening at the top of the spongocoel in a sponge is called the _____.
osculum
These sponge cells secrete collagen in the mesophyl.
Needle like structure that provides support for the sponge ...
spicules
Names the three body forms of sponges.
Asconoid
Syconoid
leuconoid