Question

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

Answer 1

1.All have olfactory organs - sense organs are poorly developed in these animals
2.arachnida - it belongs to arthropods
3.holothuroidea