PSS FINAL EXAM Questions and Correct Answers 2025/2026

PSS FINAL EXAM Questions and Correct Answers 2025/2026 Characteristics of Arthropods - Answer -bilaterally symmetrical, joint appendages, they molt, exoskeleton, segmented body, open circulatory system, brain is ganglia Five Subphylums - Answer -Hexapoda (butterflies), Chelicerata (Scorpions or spiders), Myriapoda ( Millipedes), Trilobites (extinct), and crustacea (shrimp) Insect products used by humans - Answer -Silk from silk worms, food like almonds, made from chitin, red dye, and honey 4 ecological processes that require insects - Answer -pollination, soil mixing, soil formation, and recycling plant/animal material 7 level classification of binomial nomenclature - Answer -Kingdom, phylum, class, order, family, genus, species Approximate number of plants - Answer -310, 000 Approximate number of vertebrates - Answer -62,000 Approximate number of invertebrates - Answer -1.4 million How many insects described? - Answer -1 million insects described Generalized Insect Body - Answer -Head, Thorax (prothorax, mesothorax, metathorax), and abdomen