What are the 2 major types of animals? insects and mammals coelomates and psuedocoelomates vertebrates and invertebrates medusa and hermaphrodites

The correct answer is-

vertebrates and invertebrates.

Animals can be primarily divided into two broad categories/ types that are-

Vertebrates and Invertebrates.

Vertebrates are the organisms that possess backbone or spinal column ( such as fishes, amphibians, reptiles, birds, and mammals).

Invertebrates on the other hand, are the organisms that are devoid of backbone ( organisms like insects, sponges, worms are invertebrates).

Thus, vertebrates and invertebrates are the two major types of animals.

For an organism to be classified in the animal kingdom it is necessary for that organism to be eukaryotic and multicellular. In addition, he must not be able to produce his own food (he must be heterotrophic), and must eat by eating food taken from the environment.

To be classified in the dilo arthropoda, the organism must have an external skeleton, a segmented body and articulated legs.

To be classified in the insect class, the organism must have a separate body in the head, chest and abdomen, have two antennae, two pairs of wings and three pairs of legs.