What is the scientific name of sea cucumber (echinoderm)?
a) Asterias rubens
b) ophiothrix fragilis
c) Arbacia punctulata
d) Thyone briareus
Hemichordates are closely related to ………and chordates.
a) arthropods
b) echinoderms
c) sponges
d) annelids
Explanation: they are included in deutrostomes along with echinoderms and chordates
Which of the following is/are the characteristic/s of hemichordates?
a) body is soft and worm like, every region is with coelomic compartment
b) digestive tract is complete and circulatory system is composed of vessels
c) gill slits present behind the collar, a single glomerulus, brain in mesosome
d) all of these
The larva of hemichordates is called……
a) Planula
b) Trochophore
c) Bipinnaria
d) Tornaria
Which of the following is/are the example of hemichordates?
a) Saccoglossus kowalevskii
b) Balanglossus sp.
c) Thyone briareus
d) both a and b
Phylum Chordata:
