Ch. 13- Section 4: Flashcard Review

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•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What do sea urchins, sand dollars, and sea biscuits use to protect themselves from predators?
Back
spines
2.
FLASHCARD QUESTION
Front
What characteristic of echinoderms allows them to sense food, predators, and other things in their environment from all directions?
Back
radial symmetry
3.
FLASHCARD QUESTION
Front
What are the hollow, thin-walled tubes that have suction cups on the end in echinoderms?
Back
tube feet
4.
FLASHCARD QUESTION
Front
How do echinoderms move?
Back
They use their tube feet- as pressure in the tube feet changes, they push out and pull them in.
5.
FLASHCARD QUESTION
Front
What is the reason scientists hypothesize that echinoderms resemble vertebrates more than other invertebrates?
Back
complex body systems & embryos that develop the same as embryos of vertebrates.
6.
FLASHCARD QUESTION
Front
What type of skeleton do echinoderms have?
Back
endoskeleton.
7.
FLASHCARD QUESTION
Front
What is the main body symmetry of echinoderms?
Back
radial symmetry.
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