(1) animals that live on both land and water.________. (2) animals with a backbone.________ (3) animals breathe through gills._________ (4) animals with light bones.________ (5) animals that give birth to their young ones._______
Answers
Answer:
Scientists use the word vertebrate to describe this familiar group of animals that includes man. Vertebrates have certain features in common: (1) a vertebral column made out of bone or cartilage; and (2) a hollow dorsal nervous system. This consists of an anterior brain enclosed in the skull and a spinal cord protected by the vertebral column. Scientists recognize five distinct types of vertebrates. These are very easily recognized by their external appearance. The vertebrates are a group of a phylum known as the Phylum Chordata. Further adaptations for life in water involve the control of the amount of water and salts in the body. There are about 1,000 species of amphibians living today, including the frogs, toads, newts and salamanders. The lobe-finned fish had fins supported by bones grouped so that they showed the beginning of a pattern that resembled the pentadactyl limb.
Answer:
1)turtles
2)tiger
3)fish
4) lizards
5)bats
Explanation:
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