Prokaryote or eukaryote.
Whether a cell wall is present, and of what material.
Unicellular or multicellular.
Autotrophic or heterotrophic.
Bacteria and cyanobacteria — single cells with no true nucleus.
Single-celled with a true nucleus — Amoeba, Paramecium, Euglena.
Mostly multicellular, absorbing nutrients — yeast, mushrooms, moulds.
Algae — simplest body, needs water.
Mosses — no vascular tissue.
Ferns — vascular, but no seeds.
Pines — seeds exposed on cones.
Flowering plants — seeds inside fruit.
No notochord at any life stage — from simple sponges to complex arthropods. Most of the animal kingdom's diversity.
Has a notochord, a flexible rod-shaped support, at some stage — protochordates and vertebrates.
Sponges — pores let water flow through; no true tissues.
Hydra, jellyfish — tentacles catch prey, one opening for both food and waste.
Insects, crabs — jointed legs and a hard exoskeleton.
Gills, fins.
Water & land.
Scaly skin.
Feathers, flight.
Milk-feeding young.
The immense variety of life forms on Earth.
Found naturally only in one particular region.
Systematically grouping organisms by shared traits.
Monera, Protista, Fungi, Plantae, Animalia.
Flexible rod-shaped support; divides chordata from non-chordata.
Has / lacks a backbone.
Two-part Latin scientific naming (genus + species).
Kingdom → Phylum → Class → Order → Family → Genus → Species.