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Questions and Answers
What is the name of the protein that makes up the skeleton of simple sponges?
What is the name of the protein that makes up the skeleton of simple sponges?
- Spongin (correct)
- Chitin
- Keratin
- Collagen
What is the primary function of choanocytes in sponges?
What is the primary function of choanocytes in sponges?
- To act as a pump to bring water into the sponge (correct)
- To facilitate movement
- To provide structural support
- To aid in digestion
What is a characteristic of sponges that allows them to regenerate lost body parts?
What is a characteristic of sponges that allows them to regenerate lost body parts?
- Presence of a centralized gut
- Development of internal organs
- Totipotent cells (correct)
- Presence of a nervous system
What is the name of the phylum that sponges belong to, which means 'pore-bearer'?
What is the name of the phylum that sponges belong to, which means 'pore-bearer'?
What is the estimated time period that sponges have existed on Earth?
What is the estimated time period that sponges have existed on Earth?
What is the name of the unicellular eukaryotes that are related to choanocytes?
What is the name of the unicellular eukaryotes that are related to choanocytes?
What is a characteristic of sponges that distinguishes them from other animals?
What is a characteristic of sponges that distinguishes them from other animals?
What is the term used to describe the layer of cells in the middle of a sponge's body?
What is the term used to describe the layer of cells in the middle of a sponge's body?
What is the term used to describe the group of all other animals that are related to sponges?
What is the term used to describe the group of all other animals that are related to sponges?
What is a characteristic of choanoflagellates that allows them to move and feed?
What is a characteristic of choanoflagellates that allows them to move and feed?
What is the significance of choanoflagellates in the context of metazoan evolution?
What is the significance of choanoflagellates in the context of metazoan evolution?
What is a characteristic feature of Ctenophores?
What is a characteristic feature of Ctenophores?
What is the significance of Acrosomata in the context of Ctenophore phylogeny?
What is the significance of Acrosomata in the context of Ctenophore phylogeny?
What is the characteristic feature of Cnidarians?
What is the characteristic feature of Cnidarians?
What is the function of cnidae in Cnidarians?
What is the function of cnidae in Cnidarians?
What is the significance of anemones in the context of marine mutualisms?
What is the significance of anemones in the context of marine mutualisms?
What is the characteristic feature of corals?
What is the characteristic feature of corals?
What is the significance of Cubozoa?
What is the significance of Cubozoa?
What is the characteristic feature of Hydrozoa?
What is the characteristic feature of Hydrozoa?
What is the significance of the term 'Cnidaria'?
What is the significance of the term 'Cnidaria'?
What is the primary mechanism by which sponges move?
What is the primary mechanism by which sponges move?
Which cell type is responsible for generating all other cell types in sponges?
Which cell type is responsible for generating all other cell types in sponges?
What is the characteristic shared by choanoflagellates and sponges?
What is the characteristic shared by choanoflagellates and sponges?
What is the significance of sponges being considered the sister group of all other animals?
What is the significance of sponges being considered the sister group of all other animals?
What is the function of the mesophyl in sponges?
What is the function of the mesophyl in sponges?
What is the term used to describe the protein that makes up the skeleton of simple sponges?
What is the term used to describe the protein that makes up the skeleton of simple sponges?
What is the characteristic that distinguishes sponges from parazoans?
What is the characteristic that distinguishes sponges from parazoans?
What is the primary function of choanocytes in sponges?
What is the primary function of choanocytes in sponges?
What is the characteristic that choanoflagellates and sponges share with other animals?
What is the characteristic that choanoflagellates and sponges share with other animals?
What is the significance of the term 'Porifera'?
What is the significance of the term 'Porifera'?
What is the likely reason for the uncertainty in Ctenophore placement in the evolutionary tree?
What is the likely reason for the uncertainty in Ctenophore placement in the evolutionary tree?
What is the unique feature of Cubozoa venom?
What is the unique feature of Cubozoa venom?
What is the characteristic feature of Scyphozoans?
What is the characteristic feature of Scyphozoans?
What is the likely reason for the presence of cnidae in Cnidarians?
What is the likely reason for the presence of cnidae in Cnidarians?
What is the characteristic feature of Hexacorallia?
What is the characteristic feature of Hexacorallia?
What is the likely reason for the anemone-anemonefish mutualism?
What is the likely reason for the anemone-anemonefish mutualism?
What is the unique feature of Anthozoans?
What is the unique feature of Anthozoans?
What is the likely reason for the presence of choanoflagellates at the base of metazoans?
What is the likely reason for the presence of choanoflagellates at the base of metazoans?
What is the characteristic feature of Porifera?
What is the characteristic feature of Porifera?
What is the unique feature of Hydrozoans?
What is the unique feature of Hydrozoans?
What is the likely reason for the placement of Choanoflagellates as the closest relatives to metazoans?
What is the likely reason for the placement of Choanoflagellates as the closest relatives to metazoans?
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