Describe the three main body types of sponges. Which of the three body types is usually the largest? Why?
What will be an ideal response?
The three body types are the simple asconoid sponges, with one spongocoel and very little surface area; the syconoid sponges, which have a spongocoel surrounded by many layers of tissue and ostia; and the leuconoid body type with many spongocoels surrounded by dense ostia. Of the three, the leuconoid body plan supports the largest sponges because the very large surface area means there is a large volume of water circulating within the sponge that can support this large body.
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a. provide structure to the rhizomes. b. carry oxygen to plant parts. c. provide buoyancy to the blade. d. both b and c
Immigration and __________ permanently affect population size, but __________ does not. Fill in the blank(s) with the appropriate word(s)
Surfactants function as microbicidal agents because they do what to microorganisms?
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A) facilitated diffusion to move glucose down its concentration gradient. B) osmosis to directly absorb glucose. C) facilitated diffusion to move glucose up its concentration gradient. D) active transport to move glucose up its concentration gradient. E) active transport to move glucose down its concentration gradient.