Which of the following class of animals includes the first vertebrates to appear on earth?
a) tunicates
b) osteichthyes
c) chondrichthyes
d) agnatha
Which of these is not related to potostomes?
a) annelids
b) blastopore anus
c) schizocoelom
d) spiral cleavage
Which of the following is not parasite?
a) porifera
b) nematoda
c) platyhelminthes
d) annelida
Which of the following most clearly demonstrates the evolutionary relationship b/w annelids and arthropods?
a) body segment
b) radial symmetry
c) an exoskeleton
d) a complete digestive tract
Reptiles are much more extensively adapted to life on land than amphibians in that reptiles?
a) go through the larval stage
b) are endothermic
c) have a complete digestive system
d) have shelled egg
Amphibian arose from……..
a) bony fish with lungs
b) jawless fish
c) ray finned
d) cartilaginous fish
