What is the function of the hemal system? reproductive locomotor circulation we
ID: 260572 • Letter: W
Question
What is the function of the hemal system?
reproductive
locomotor
circulation
we don't know
2
Echinoderms have an endoskeleton.
True
False
3
How do sea cucumbers defend themselves against predators?
sharp spines
ink screen
tough outer skin
vomit
4
Which of the followig are sessile for most of their lives?
feather stars
sea lillies
sea urchin
sea cucumber
5
What is the term for the tiny jaws that clean sea stars?
podia
ossicles
pedicellariae
tube feet
A.reproductive
B.locomotor
C.circulation
D.we don't know
Explanation / Answer
1. C. circulation
The hemal system helps in circulation of nutrients and gases.
2. True
Echinoderms have an endoskeleton made of ossicles.
3. C. tough outer skin
The tough leathery outer skin in sea cucumbers offers protection against predators.
4. B. Sea lilies.
Sea lilies are sessile for most of their lives.
5. B. Ossicles
Ossicles are pinchers that help in cleaning debris settled on star fish.
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