GCU BIO 319: LATEST A+ QUESTIONS AND ANSWERS
GUIDE FOR ULTIMATE SUCCESS
_________are tubular cells that form pores, while ______ are amoeboid cells in the
mesophyll with various functions.
Porocytes; archaeocytes
Select all of the following that describe pinacocytes.
They form the outer layer of cells of a sponge.
They can help to regulate the surface area of the sponge.
They can be contractile.
Mesophyll in sponges can be described as
loosely arranged cells and skeletal elements in a gelatinous matrix.
Surface area can be regulated by the sponge through contraction of modified pinacocyte cells
called ______.
Myocyte
The net-like region around the flagellum functions to ______.
trap food particles
Provide outer covering
Pinacocyte
Secretion of collagen
Collected
Create a water current
coenocyte
Select all of the following that describe archaeocytes.
They differentiate into more specialized cells.
They are amoeboid cells.
They are phagocytes.
What type of sponge has incurrent canals, flagellated chambers, excurrent canals, but NO
spongocoel?
Leuconoid
, are cells that form an epithelial-like outer covering of the sponge.
pinacocytes
Which of the following can be found in the mesohyl of sponges?
Ameboid cells
An archaeocyte that differentiates to secrete spongin would be called a
spongocyte
one that differentiates to secrete spicules would be called a
sclerocyte
Sponge cells that can phagocytize food particles and differentiate into other cell types like
spongocytes are called
archaeocyte
Secrete a sticky substance that holds onto and captures prey
Colloblasts
secretes spongin
spongocyte
secretes spicules
sclerocyte
secretes collagen
collencyte
The free-swimming larvae of most sponges is a solid-bodied ______.
parenchymula
A collagenous protein called ________can be found in the Demospongiae.
spongin
The trabecular reticulum layer is characteristic of sponges in the Class
Hexactinellida
in sponge larvae called______the flagellated cells of the larvae move to the interior and
become choanocytes.
parenchymula
GUIDE FOR ULTIMATE SUCCESS
_________are tubular cells that form pores, while ______ are amoeboid cells in the
mesophyll with various functions.
Porocytes; archaeocytes
Select all of the following that describe pinacocytes.
They form the outer layer of cells of a sponge.
They can help to regulate the surface area of the sponge.
They can be contractile.
Mesophyll in sponges can be described as
loosely arranged cells and skeletal elements in a gelatinous matrix.
Surface area can be regulated by the sponge through contraction of modified pinacocyte cells
called ______.
Myocyte
The net-like region around the flagellum functions to ______.
trap food particles
Provide outer covering
Pinacocyte
Secretion of collagen
Collected
Create a water current
coenocyte
Select all of the following that describe archaeocytes.
They differentiate into more specialized cells.
They are amoeboid cells.
They are phagocytes.
What type of sponge has incurrent canals, flagellated chambers, excurrent canals, but NO
spongocoel?
Leuconoid
, are cells that form an epithelial-like outer covering of the sponge.
pinacocytes
Which of the following can be found in the mesohyl of sponges?
Ameboid cells
An archaeocyte that differentiates to secrete spongin would be called a
spongocyte
one that differentiates to secrete spicules would be called a
sclerocyte
Sponge cells that can phagocytize food particles and differentiate into other cell types like
spongocytes are called
archaeocyte
Secrete a sticky substance that holds onto and captures prey
Colloblasts
secretes spongin
spongocyte
secretes spicules
sclerocyte
secretes collagen
collencyte
The free-swimming larvae of most sponges is a solid-bodied ______.
parenchymula
A collagenous protein called ________can be found in the Demospongiae.
spongin
The trabecular reticulum layer is characteristic of sponges in the Class
Hexactinellida
in sponge larvae called______the flagellated cells of the larvae move to the interior and
become choanocytes.
parenchymula
