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
4 Brittle Star is an example of the class
opliuroidea,
echinoidea
crinoides
holothuroidea
5 Which of these is not true of star fish?
They are star shaped
Pedicellaria are present
Water vascular system is not used for gathering food
Possession of specialised jaw-like appendages
6 Vertebrata is a subphylum of the phylum
arthropoda
reptilia
amphibia
chordata
7 Which of these is not true of the chordates?
have tightly packed cells
have tubular nerve chords
they have no notochord
have gill slit at some stages
1
Expert's answer
2016-09-05T12:37:03-0400
1.All have olfactory organs - sense organs are poorly developed in these animals 2.arachnida -belong to arthropods 3.holothuroidea 4.ophiuroidea 5.Water vascular system is not used for gathering food 6.chordata 7.they have no notochord
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