Cnidarians Flashcards
What’s a type of Cnidarian?
Jellyfish
What is the scientific term for stinging cells?
Nematocysts
Are cnidarians invertebrates or vertebrae?
Invertebrates
What are the 2 stages in a cnidarians life cycle?
Polyd (immature stage)
Medusa (Mature stage)
What are the part of a polyp?
Tentacle with nematocysts
Gastro vascular cavity
Mouth opening
Nerve net
Define gastro vascular cavity
Open area that produces chemicals to digest and distribute food and nutrients
What is a nerve net?
Nerve cells that are through out the entire body
How do polyps produce waste ?
They have one opening and a 2 way digestive system so their waste product comes out the mouth opening
What cnidarians stay polyps their whole lives?
Hydras and sea anemones
What are the parts of the medusa stage?
Nerve netting
Gastro vascular cavity
Mouth opening
Tentacles/ nematocysts
What is a nick name for the polyp stage?
Vase stage
What is the nick name for the medusa stage?
Bell stage
How do cnidarians reproduce?
Sexually and Asexually
How do cnidarians reproduce asexually?
By budding
How do cnidarians reproduce sexually?
The separate
Define colonial animals
Organism that are individual organisms working together as a single unit
What is a example of a colonial animals ?
Coral , which is made up of polyps
Define Cnidarians
Multi celled organisms that have tentacles with stinging cells
