WHY WE NEED CLASSIFICATION

Question 1

why we need classification (4)

Answer 1

• phylogenetic classification allows us to infer close relationships, i.e same taxon means likely closely related
• if a new animal is discovered we can predict characteristics
• quicker to communicate with a common phrase
• when looking at the health of an area, counting families is more useful than individual species

Question 2

classification is tenative

Answer 2

• depends on current knowledge, could change with new advancements

Question 3

3 domains (3)

Answer 3

• eubacteria - familiar bacteria, prokaryotes
• archaea - bacteria (often) with odd metabolisms
• eukaryota - plantae, animalia, fungi, protoctista

Question 4

five kingdoms by domain (2)

Answer 4

• eubacteria & archaea = prokaryotes

- eukaryota - plantae, animalia, fungi, protoctista

Question 5

characteristics of kingdoms (5)

Answer 5

• prokaryotes = cells lack a nuclear envelope & membrane-bound organelles
• plantae = multicellular eukaryotes, photosynthesise, cellulose
• animalia = multicellular eukaryotes, no cell wall, nervous co-ordination, heterotrophic
• fungi = heterotrophic eukaryotes, chitin cell walls (w/ hyphae filaments), reproduce by spores
• protoctista = mainly single cell eukaryotes, no tissue differentiation