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Questions and Answers
Class Scyphozoa encompasses true jellyfish.
Class Scyphozoa encompasses true jellyfish.
True (A)
Which of the following are characteristics of Class Scyphozoa? (Select all that apply)
Which of the following are characteristics of Class Scyphozoa? (Select all that apply)
- Primarily freshwater species
- Thin layer of mesoglea
- True jellyfish (correct)
- Tentacles that can get up to 6m long (correct)
Name an example of Class Scyphozoa.
Name an example of Class Scyphozoa.
Cyanea sp or Aurelia sp (Moon Jelly Fish)
What are the characteristics of Cyanea sp?
What are the characteristics of Cyanea sp?
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What are the characteristics of Aurelia sp (Moon Jelly Fish)?
What are the characteristics of Aurelia sp (Moon Jelly Fish)?
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The anatomical parts of Moon Jelly Fish include the ______.
The anatomical parts of Moon Jelly Fish include the ______.
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Study Notes
Class Scyphozoa Overview
- Known as true jellyfish, members of this class possess a thick layer of mesoglea.
- Tentacles can reach lengths of up to 6 meters, allowing for effective predation.
Representative Species
- Examples include Cyanea sp. and Aurelia sp. (commonly called Moon Jellyfish).
Cyanea sp. Characteristics
- Features a diameter of about 2 meters and tentacles extending up to 30 meters.
- Medusa form is the dominant life stage, characterized by a gelatinous umbrella.
Aurelia sp. (Moon Jellyfish) Characteristics
- Marginal tentacles have sensory functions, assist in locomotion, and serve defensive purposes.
- These adaptations help Moon Jellyfish navigate their environment and evade predators.
Anatomical Structure of Moon Jellyfish
- Composed of various parts including:
- Marginal tentacles for sensory input and defense.
- Mouth for feeding.
- Oral arms to help capture prey.
- Gonads for reproduction.
- Gastric pouch for digestion.
- Radial and circular canals for nutrient distribution throughout the body.
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