Echinoderms have a strong affinity to phylum chordata especially to subphylum
a) hemichordata
b) vertebrata
c) urochordata
d) cephalochordata
Ciliated larva of hemichordates e.g. ……..larva of Balanoglossus and bipinnaria larva of echinoderms are very much similar in shape and structure.
a) Planula
b) Trochophore
c) Tonaria
d) Glochidium
Which of the following is/are similar in echinoderms and hemichordates?
a) pattern of cleavage of fertilized egg
b) formation of mesoderm
c) formation of anus, mouth coelom
d) all of these
Explanation: creatinine phosphate in the muscles of both are similar which produce energy for muscular activity
What is the scientific name of starfish (echinoderm)?
a) Asterias rubens
b) ophiothrix fragilis
c) Arbacia punctulata
d) Thyone briareus
What is the scientific name of brittle star (echinoderm)?
a) Asterias rubens
b) ophiothrix fragilis
c) Arbacia punctulata
d) Thyone briareus
What is the scientific name of sea urchin (echinoderm)?
a) Asterias rubens
b) ophiothrix fragilis
c) Arbacia punctulata
d) Thyone briareus
