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26 Cards in this Set
- Front
- Back
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What does Cnidiaria mean? |
Nettle like |
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What are nematocysts? |
Stinging cells within the tentacles of a jellyfish |
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Where do you find Cnidarias? |
Fresh and Salt Water |
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List 3 examples of Cnidarias |
Sea anemones, coral, hydra |
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List 3 predetors |
sea turtles, sea slugs, crabs, starfish |
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What is the economic importance of the phylum? |
Tourism, protects beaches, food |
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What type of symmetry is found on this phylum? |
radial |
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List and explain the difference between the two body types of Cnidaria |
Polypoid: tentacle facing up and sessile Medusoid: tentacle facing down and free swimming |
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What is the distinguishing characters of this group? |
stinging tentacles |
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What is an operculum? |
gill covers |
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Explain how the nemotocysts discharges |
external touch from prey or predators |
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Where would you find hydra? |
fresh water |
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What type of support do hydras have? |
hydrostatic skeleton |
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what do hydras eat? |
water fleas, insects/worms |
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How do hydras reproduce? |
Sexually: Eggs are produced and sperm released into the water Asexually: budding |
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what common resource makes up most of the jellyfishes body? |
Water |
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Where do jellyfish get their support? |
Water |
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Where is the mouth of a jellyfish? |
underside |
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How do jellyfish reproduce? |
They can reproduce sexually by releasing egg and sperm into the water forming planula |
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Are there male and female jellyfish? |
Yes, the reproductive organs, or gonads, form in the lining of the gut also known as gastrodermis |
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Where do you find sea anemones? |
In coastal area attached to submerged substrate rocks |
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Do they have medusa or polyp type body? |
Polyp |
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Where do sea anemones get their support? |
water |
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What do sea anemones feed on? |
small fish and shrimp |
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Are their male and female anemones? |
yes |
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How do they reproduce? |
Sexually: Egg and sperm Asexually: budding |
