Question

Compare and contrast Chondrichthyes and Actinopterygii fishes. Make a table to compare. Think about physical (anatomical) and ecological/behavioral differences.

Answer 1

Answer: Compare and contrast Chondrichthyes and Actinopterygii fishes:

Chondrichthyes fishes	Actinopterygii fishes
Anatomical differences: It is the class of bony fish whose endoskeleton is made of cartilages	Anatomical differences:It is the of cartilaginous fish whose endoskeleton is made up of bones.
Exoskeleton: It's exoskeleton is made up of very small denticles coated with enamel (called placoid)	Exoskeleton: It's exoskeleton is made up of thin bony plates called cycloids.
Position of mouth - ventrally located	Position of mouth - at the anterior tip of body
Oral jaw sets - single set of jaws	Oral jaw sets - two sets of jaws
Gills pairs / Operculum - 5 -7 pairs. Gills not covered by an operculum	Gills pairs / Operculum - 4 pairs. Gills covered by an operculum
Habitat differences: It can only be found in marine water	Habitat differences:It can be found in both fresh and marine water.
Mode of Nutrition: Generally carnivores	Mode of Nutrition: Can be carnivores, omnivores, herbivores, filter feeders or detritivore