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Answer to Question #61398 in Other Biology for bbb

Question #61398
1 Which of these is not true about the phylum echinodermata?
All have olfactory organs
Bodies are not metamerically segmented
Sexes are separate
Bodies are not metamerically segmented

2 Which of these is not a class of the phylum echinodermata?
arachnida
opliuroidea
crinoides
asteroidea

3 Sea Cucumber is an example of the class
holothuroidea
echinoidea
crinoides
opliuroidea
Expert's answer
1.All have olfactory organs - sense organs are poorly developed in these animals
2.arachnida - it belongs to arthropods
3.holothuroidea

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