PSS FINAL UPDATED Exam Questions
and CORRECT Answers
Characteristics of Arthropods - CORRECT ANSWER - bilaterally symmetrical, joint
appendages, they molt, exoskeleton, segmented body, open circulatory system, brain is ganglia
Five Subphylums - CORRECT ANSWER - Hexapoda (butterflies), Chelicerata (Scorpions
or spiders), Myriapoda ( Millipedes), Trilobites (extinct), and crustacea (shrimp)
Insect products used by humans - CORRECT ANSWER - Silk from silk worms, food like
almonds, made from chitin, red dye, and honey
4 ecological processes that require insects - CORRECT ANSWER - pollination, soil
mixing, soil formation, and recycling plant/animal material
7 level classification of binomial nomenclature - CORRECT ANSWER - Kingdom,
phylum, class, order, family, genus, species
Approximate number of plants - CORRECT ANSWER - 310, 000
Approximate number of vertebrates - CORRECT ANSWER - 62,000
Approximate number of invertebrates - CORRECT ANSWER - 1.4 million
How many insects described? - CORRECT ANSWER - 1 million insects described
Generalized Insect Body - CORRECT ANSWER - Head, 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
Paurometabolous metamorphosis - CORRECT ANSWER - gradual...egg>nymph>adult
-immature differs from adult
Hemimetabolous metamorphosis - CORRECT ANSWER - Incomplete, immature and
adult differ considerably
Holometabolous metamorphosis - CORRECT ANSWER -
complete...egg>larva>nymph>adult
Diapause - CORRECT ANSWER - The arrest of development to enhance survival of
insect generations
Instar - CORRECT ANSWER - developmental stage between molts until mature.
Molting - CORRECT ANSWER - The shedding of rigid exoskeleton to help insects grow
Nymph - CORRECT ANSWER - Immature form in hemimetabolous development
Larvae - CORRECT ANSWER - immature form in hemimetabolous development
Layers of integument - CORRECT ANSWER - epicuticle, exocuticle, endocuticle,
subcuticular space, basement membrane (epidermal cells)
Steps of molting - CORRECT ANSWER - Apolysis or separation of exoskeleton from
epidermis> ecdysis or shedding of epi and exocuticle> molting
and CORRECT Answers
Characteristics of Arthropods - CORRECT ANSWER - bilaterally symmetrical, joint
appendages, they molt, exoskeleton, segmented body, open circulatory system, brain is ganglia
Five Subphylums - CORRECT ANSWER - Hexapoda (butterflies), Chelicerata (Scorpions
or spiders), Myriapoda ( Millipedes), Trilobites (extinct), and crustacea (shrimp)
Insect products used by humans - CORRECT ANSWER - Silk from silk worms, food like
almonds, made from chitin, red dye, and honey
4 ecological processes that require insects - CORRECT ANSWER - pollination, soil
mixing, soil formation, and recycling plant/animal material
7 level classification of binomial nomenclature - CORRECT ANSWER - Kingdom,
phylum, class, order, family, genus, species
Approximate number of plants - CORRECT ANSWER - 310, 000
Approximate number of vertebrates - CORRECT ANSWER - 62,000
Approximate number of invertebrates - CORRECT ANSWER - 1.4 million
How many insects described? - CORRECT ANSWER - 1 million insects described
Generalized Insect Body - CORRECT ANSWER - Head, 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
Paurometabolous metamorphosis - CORRECT ANSWER - gradual...egg>nymph>adult
-immature differs from adult
Hemimetabolous metamorphosis - CORRECT ANSWER - Incomplete, immature and
adult differ considerably
Holometabolous metamorphosis - CORRECT ANSWER -
complete...egg>larva>nymph>adult
Diapause - CORRECT ANSWER - The arrest of development to enhance survival of
insect generations
Instar - CORRECT ANSWER - developmental stage between molts until mature.
Molting - CORRECT ANSWER - The shedding of rigid exoskeleton to help insects grow
Nymph - CORRECT ANSWER - Immature form in hemimetabolous development
Larvae - CORRECT ANSWER - immature form in hemimetabolous development
Layers of integument - CORRECT ANSWER - epicuticle, exocuticle, endocuticle,
subcuticular space, basement membrane (epidermal cells)
Steps of molting - CORRECT ANSWER - Apolysis or separation of exoskeleton from
epidermis> ecdysis or shedding of epi and exocuticle> molting
