IB BIOLOGY CLASSIFICATION KEY COMPREHENSIVE EXAM 2026 QUESTIONS WITH SOLUTIONS GRADED A+

IB BIOLOGY CLASSIFICATION KEY
COMPREHENSIVE EXAM 2026 QUESTIONS
WITH SOLUTIONS GRADED A+


◉ Taxonomy. Answer: the naming and arranging of living organisms
into groups


◉ Phylogeny. Answer: evolutionary history


◉ Binomial System of Nomenclature. Answer: System of classifying
organisms by 2 name system
(bi=2, nomen=name)
Latin or Greek
"Genus species"


◉ Rules of Binomial Nomenclature. Answer: 1. Genus = Uppercase
2. species = lowercase
3. Italics if typed
4. Underlined if handwritten


◉ Aristotle Classification. Answer: used until 1400s

, ◉ Carolus Linneaus Classification. Answer: 1700s to now


◉ Hierarchy of Taxa (7). Answer: Kingdom
Phylum
Class
Order
Family
Genus
Species


◉ Taxon. Answer: a taxonomic group of any rank
EX: species, family, class


◉ 3 Domains. Answer: 1. Eubacteria
2. Archaea
3. Eukarya


◉ Eubacteria. Answer: -prokaryote (no organized nucleus/organelles)
EX: E. coli


◉ Archaea. Answer: -prokaryote (no organized nucleus/organelles)