Heart can be three or four chambered in the vertebrate group of _______________.
Amphibians are the first vertebrates to possess a three chambered heart.
Write true or false:
(a) Heart of mammals is three chambered.
(b) Angiosperms are flower bearing plants.
(c) Sycon is a member of phylum porifera.
(d) Arthropods are vertebrate animals.
(e) All forms of life on earth are similar.