Sponge choanocytes are very similar to the cells of Choanoflagellates. What cell types can be found in other animals that also resemble the cells of Choanoflagellates? A. What evidence suggests that Choanoflagellates and animals share a common ancestor? B. What cellular function do cells of colonial Volvocine algae (Gonium, Volvox) specialize in for the colonial forms? C. Why would we look at algae and fungi when studying the origin of multicellular animals? D. What things must a single-celled organism do to become multicellular?
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Step 1: Some cell types found in other animals that resemble the cells of Choanoflagellates include the collar cells of sponges, the flagellated cells in the lining of the human respiratory tract, and the sperm cells of animals. Show more…
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Choanocytes are a. a group of protists that are believed to have given rise to animals. b. specialized cells of sponges that function to trap and eat small particles. c. cells that make up the gelatinous layer in sponges. d. cells of sponges that function to transfer nutrients to other cells. e. cells that form spicules in sponges.
Which of the below organisms has flagellated cells that are very similar to the choanocytes possessed by sponges? A) chlorophytes B) euglenoids C) choanoflagellates D) cercozoans
Adi S.
Jon found an organism in a pond, and he thinks it's a freshwater sponge. His friend Liz thinks it looks more like an aquatic fungus. How can they decide whether it is an animal or a fungus? a. See if it can swim. b. Figure out whether it is autotrophic or heterotrophic. c. See if it is a eukaryote or a prokaryote. d. Look for cell walls under a microscope.
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