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Questions and Answers
What two animals belong in the Echinoidea class?
What two animals belong in the Echinoidea class?
- Starfish
- Sand Dollars (correct)
- Crabs
- Sea Urchins (correct)
Echinoidea have arms.
Echinoidea have arms.
False (B)
Echinoidea have a _ endoskeleton.
Echinoidea have a _ endoskeleton.
one piece
Echinoidea have numerous _ on their surface.
Echinoidea have numerous _ on their surface.
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What is Aristotle's lantern?
What is Aristotle's lantern?
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They are primarily _ when it comes to eating.
They are primarily _ when it comes to eating.
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What three things do Echinoidea eat? (Select all that apply)
What three things do Echinoidea eat? (Select all that apply)
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Study Notes
Class Echinoidea Overview
- Includes Sea Urchins and Sand Dollars as representative animals.
- Characterized by the absence of arms; they do not have any limbs.
- Possess a one-piece endoskeleton, providing structural integrity and support.
Morphological Features
- Have numerous movable spines on their surface, which assist in locomotion and protection.
Feeding Mechanism
- Feature Aristotle's lantern, a specialized structure with a set of teeth used for feeding, particularly effective for scraping and grinding food.
- Primarily act as scavengers, feeding on organic matter available in their environment.
Dietary Habits
- Diet consists of algae, kelp, and detritus, playing a vital role in their ecosystem by recycling nutrients.
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Description
Test your knowledge on the Echinoidea class within Echinodermata. This quiz covers key characteristics, notable features such as Aristotle's lantern, and the types of animals found in this class. Perfect for students studying marine biology or echinoderm taxonomy!
