Question

Animals were once categorized under a metazoan or eumetazoan. What makes the kingdom Animal Animalia and no longer a metazoan or eumetazoan? What distinguishes them from plants and fungi? Be precise.

Answer 1

• Metazoa does not contain prokaryotes (Kingdom Monera, includes bacteria, blue-green algae) or protists (Kingdom Protista, includes unicellular eukaryotic organisms.
• Animalia contains all metazoans with protists and prokaryotic organism that can locomote.(protozoa).
• Because protozoans and sponges having characters of animal like locomotory organ, heterotrophic mode of nutrion of protozoa, absence of chlorophyll pigments, cell wall absent and food ingeated by engulfment.
• So they get completely included in animalia now.

Animalia has no chloroplast and cell wall absent while plant has cell wall and presence of chloroplast.

Fungi has saprotrophic mode of nutrition while animal has heterotrophic. Fungi are not motile..but animal can move.