Invertebrates

Diploblastic animals are with

• Differentiated ectoderm

• Undifferentiated mesoglea

• Differentiated endoderm

• All of these

A complete digestive system is seen in

• Coelenterates

• Platyheminthes

• Ctenophores

• Annelids

Alimentary canal has a single opening in

• Echinoderms

• Platyheminthes

• Nematodes

• Annelids

Common feature between Porifera, Cnidaria, Ctenophora and platyheminthes

• Bilateral symmetry

• Eumetazoans

• Absence of coelom

• Tissues

Correct statement of the following is

• All vertebrates are chordates

• All chordates are vertebrates

• All invertebrates are chordates

• All chordates retain notochord

Lowest level of organization among eumetazoans is

• Tissue level

• Cellular level

• Organ system level

• Tissue- organ level

Polymorphic cnidaria in the following is

• Hydra

• Aurelia

• Metridium

• Physalia

Bioluminescence is exhibited by

• Pennatula

• Physalia

• Pleurobrachia

• Pavo

Find out the incorrect pair

• Wuchereria- filarial worm

• Ascaris- round worm

• Ancyclostoma- pin worm

• Taenia- tape worm

Closed circulatory system present in

• Locusta

• Saccoglossus

• Pheretima

• Acsaris