PSS FINAL EXAM QUESTIONS & ANSWERS 2024/2025
Characteristics of Arthropods - ANSWERSbilaterally symmetrical, joint appendages, they molt, exoskeleton, segmented body, open circulatory system, brain is ganglia
Five Subphylums - ANSWERSHexapoda (butterflies), Chelicerata (Scorpions or spiders...
Characteristics of Arthropods - ANSWERSbilaterally symmetrical, joint appendages, they molt,
exoskeleton, segmented body, open circulatory system, brain is ganglia
Five Subphylums - ANSWERSHexapoda (butterflies), Chelicerata (Scorpions or spiders), Myriapoda
( Millipedes), Trilobites (extinct), and crustacea (shrimp)
Insect products used by humans - ANSWERSSilk from silk worms, food like almonds, made from chitin,
red dye, and honey
4 ecological processes that require insects - ANSWERSpollination, soil mixing, soil formation, and
recycling plant/animal material
7 level classification of binomial nomenclature - ANSWERSKingdom, phylum, class, order, family, genus,
species
Approximate number of plants - ANSWERS310, 000
Approximate number of vertebrates - ANSWERS62,000
Approximate number of invertebrates - ANSWERS1.4 million
How many insects described? - ANSWERS1 million insects described
Generalized Insect Body - ANSWERSHead, Thorax (prothorax, mesothorax, metathorax), and abdomen
-1 pair of legs attached to each segment of thorax
, -1 pair of wings attached to the mess and metathorax
Steps of molting - ANSWERSApolysis or separation of exoskeleton from epidermis> ecdysis or shedding
of epi and exocuticle> molting
Scientific process - ANSWERSObservation>hypothesis (prediction)> experimentation> evaluation
Control - ANSWERSimportant because you must have something to compare the experimental group to
so you know what the typical behavior of the controls
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