- morphology and anatomy (external and internal features)
- cell structure (prokaryote/eukaryote)
- biochemistry (comparisons of DNA, RNA and the amino acid sequences in proteins)
closely related organisms possess a high degree of agreement in the molecular structure of DNA (base sequence), RNA (base sequence) and protein (amino acid sequence), while the molecules of organisms distantly related usually show a pattern of dissimilarity.
Appreciate the five kingdom system of classification:
The five kingdoms as;
Describe features of Prokaryotae:
structure of prokaryotae cells
reproduction by division
example: a rod-shaped bacterium.
Describe features of Protoctista:
unicellular or showing limited differentiation
some are heterotrophs (e.g. Phylum Protozoa) while some are autotrophs (e.g. Phylum Chlorophyta).
Describe the features of Fungi:
the Fungi as lysotrophs (decomposers)
consist of hyphae with chitinous cell walls
feeding by extracellular digestion
example: a mould.
Describe the features of Plantae:
the plants as autotrophs (producers)
possessing chlorophyll in chloroplasts
possessing a cellulose cell wall.
Describe the features of Animalia:
the animals as heterotrophs
they are capable of locomotion.
Materials designed and developed in partnership with Isinglass Consultancy Ltd.