Classification Study Guide – Verified Q&A (Exam
Prep 2025)
Adaptive radiation - Rapid and extensive speciation in a single lineage
Diversification of a group of organisms into forms filling different ecological niches
Cheliceriforms - Horseshoe crab
Arachnids
Possesses claw-like feeding appendages
Crustceans - Primarily aquatic
Crabs and Isopods
Two pairs of antennae
Diptera - Flies
complete metamorphosis
hind wings reduced to stabilizers
Hemiptera - "true bugs"
Incomplete metamorphosis
Thick forewings (except at tips)
Insects - Butterfly
Wings allow flight
Body divided into head, thorax, abdomen
Three pairs of walking legs
Insects: Coleoptera - Beetles
complete metamorphosis
hard forewings to protect membraneous hind wings
Lepidoptera - Butterflies, moths