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9 Cards in this Set
- Front
- Back
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What is the function of spicules or spikes?
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Spicules or spikes help to support the sponge's body and prtect them from being eaten.
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How do food and oxygen enter a sponge's body?
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The inner cells beat their flagella causing water to be drawn through the pores into the central cavity. The water contains food particles and oxygen.
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How do sponges reproduce?
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Sponges reproduce asexually by budding and sexually by the fertilization of swimming sex cells An individual sponge can produce both egg and sperm.
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Where do sponges live?
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All sponges live in water. Most are aquatic and live in waters around the world.
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Are sponges vertebrates or invertebrates?
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invertebrates
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What type of symmetry do sponges have?
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either asymmetrical or radial
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When do biologists believe sponges evolved?
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540 million years ago
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Describe a sponge,s likely ancestor.
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The developed from protists that lived in colonies.
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Sponges belong to what phylum?
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phylum Porifera
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