Phylum Porifera: Question Preview (ID: 20854)

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A specialized cell through which water enters the sponge is called a(n)
a) pore cell b) amebocyte c) spongocoel d) collar cell
What is the name of the middle layer of a sponge that contains amoeboid cells?
a) mesenchyme b) spongocoel c) osculum d) ostia
Which cells undergo meiosis to make sperm?
a) amoeboid cells b) collar cells c) pinacocytes d) pore cells
Another name for the spongocoel is the
a) epidermal cell b) osculum c) central cavity d) spicule
Since a sponge is an animal, the sponge will take in oxygen but release ______ as a waste product.
a) toxins b) carbon dioxide c) sulfur d) nitrogen
The purpose of a spicule is to
a) support the sponge b) provide oxygen c) allow water to enter the sponge d) produce toxins for the sponge
The cells responsible for the distribution of food, oxygen, and waste are called
a) spongin b) porocytes c) amebocytes d) collar cells
The space within the sponge is known as the
a) gemmule b) spicule c) spongocoel d) osculum
The opening at the top of a sponge where water exits the sponge is called the
a) gemmule b) spicule c) spongocoel d) osculum
What word refers to how sponges actually transport oxygen, nutrients, and waste? throughout the cell?
a) diffusion b) sessile c) spongin d) none of these
What is another name for a choanocyte?
a) gemmule b) collar cell c) pore cell d) pinacocyte
What is used the internal support (the skeletal system) of a sponge?
a) spicules and gemmules b) spongin and collagen c) gemmules and collagen d) spicules and spongin
The word Porifera means
a) pore bearing b) diffusion based c) filter feeding d) multicellular organism
Which flagellated cells move water currents through a sponge?
a) amoeboid cells b) pinaocyctes c) gemmules d) choanocyctes
The outer opening of a porocyte (pore cell) is called the
a) ostia b) osculum c) spongocoel d) collar cell
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