NR 506 Final Exam – 88 Questions on Insect Anatomy, Physiology, Metamorphosis & Taxonomy – 2026

This document contains a structured 88-question final exam review for NR 506, focusing on core concepts in entomology and arthropod biology. It comprehensively covers insect anatomy and physiology, including cuticle structure (chitin, sclerotization, integument), arthrodial membranes, hemocoel, hemolymph, dorsal vessel function, fat body roles, spiracles and tracheal systems, gastric caeca, Malpighian tubules, and peritrophic membranes. Key developmental and reproductive concepts such as hemimetabolous vs. holometabolous metamorphosis, diapause, degree days, voltinism (semivoltine, univoltine, bivoltine, multivoltine), pro-ovigenic and synovigenic reproduction, and iteroparity are clearly defined. The document also provides detailed classification review, covering major arthropod groups including Araneae, Acari, Diplopoda, Chilopoda, and numerous insect orders such as Coleoptera, Diptera, Lepidoptera, Hymenoptera, Hemiptera, Orthoptera, and Blattodea. Morphological terminology such as sternum, tergum, pleuron, antennae types (filiform, serrate, flabellate), and ultrastructural adaptations are included, making this resource highly exam-focused and terminology-rich. The final section addresses insect silk functions and ecological adaptations. This material aligns closely with standard undergraduate entomology and arthropod biology textbooks such as Borror and DeLong’s Introduction to the Study of Insects by Triplehorn and Johnson, which is widely used in upper-level biology and zoology courses. Topics reflect common learning objectives found in insect morphology, physiology, development, and systematics units. This document is particularly suitable for: Students enrolled in NR 506 Undergraduate biology majors Zoology students studying arthropod diversity Entomology students preparing for cumulative final exams Pre-professional students in agriculture, environmental science, or ecology programs It serves as a concise but comprehensive terminology-based study guide designed to reinforce high-yield concepts in insect structure, function, development, and classification for final exam preparation. Keywords: NR 506 final exam, entomology final review, insect anatomy terminology, insect physiology study guide, arthropod classification orders, hemimetabolous vs holometabolous, voltinism types, insect reproductive strategies, cuticle structure chitin, hemocoel hemolymph function, Malpighian tubules, insect metamorphosis concepts, insect respiratory system spiracles trachea, insect taxonomy orders, degree days insect development