Biology Test 16...

Which is not a character of hemichordata :-

Air-bladder, cycloid scales, homocereal caudal fin, terminal mouth, poikilothermus.

These features are true for

Air bladder which helps in respiration present in:-

How many fishes in list given below have bony endoskeleton - 

Scoliodon, Exocoetus, Pristis, Hippocampus, Labeo, Carcharodon, Clarias, Trygon, Pterophyllum, Catla

Amphibians are considered to be intermediate between pisces and reptilia because :-

a. They possess ventral heart
b. Both gill and pulmonary respiration occur in their life history.
c. Oviparity and viviparity are represented.
d. They are poikilothermal animals

Select the correct answer using the codes given below?

The skull of frog is :-

External fertilization, mesonephric kidneys and scale less skin is found in :-

Flying frog is :-

Echinoderms are characterised by :-

Find out incorrect match from column-I and column-II