Question

Arrange following groups of organisms from primitive to recent one. Mammals, Pisces, Echinodermates, cocluntrates, protozoa bacteria.

Answer 1

Answer:

protozoa bacteria ,,,coelentrates,,,echinodermates,,,,pisces,,,,mammals

Answer 2

Groups of organisms was arranged:

Bacteria , protozoa , coelenterates , echinodermates , Pisces , mammals.

Explanation:

Bacteria is the lowest form of the organism in which there is no organization of nucleic material. Above it is the protozoa. Among the classification of class animals, the lowest member is the coelenterates in which there is no definite body cavity, above it is the phylum chordates. Pisces and mammals fall under this. But, mammals are more developed than the Pisces.