1|Page
ENT 201 Exam 1: NCSU: Sorenson Exam questions
fully solved & updated (Latest Update 2026)
UPDATE!!
what are the first 2 distant ancestors to insects?
......ANSWER......trilobites, horseshoe crabs
how old are trilobites? ......ANSWER......400-600 million years
how old are horseshoe crabs? ......ANSWER......350 million years
What are the first insect fossils? ......ANSWER......tiny, wingless, soft
bodied
how old are the first insect fossils? ......ANSWER......380 million years
when were the most modern insect relatives present?
......ANSWER......180 million years ago
what are 5 examples of bugs through history? ......ANSWER......cave
drawings, china silkworms, egypt honeybees, scarabs, greece body
pests
pg. 1
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who is the father of zoology?` ......ANSWER......aristotle
who was the first to catalog insect crop pests?
......ANSWER......theophrastus
who wrote Historia Naturales Book 11? ......ANSWER......pliny the elder
Who wrote Zoologia physica ......ANSWER......Johann Sperling
who wrote Historia Insectorum? ......ANSWER......John Ray
Who wrote Systema Naturae 10th -- the binomial system of
nomenclature? ......ANSWER......Linnaeus
Almost 2/3 of all identified living species are ______________.
......ANSWER......athropods
more than half of all identified living species are _____________.
......ANSWER......insects
how many insect species have been identifed so far?
......ANSWER......about 1,000,000
pg. 2
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there are about how many individual insects for every human?
......ANSWER......200,000,000
what is the phylum of insects? ......ANSWER......arthropoda
what does arthropoda mean? ......ANSWER......jointed foot
what 4 features make up an insect? ......ANSWER......exoskeleton,
segmented body, jointed apendages, bilateral symmetry
what is the class for crabs, lobsters, etc.? ......ANSWER......crustacea
what is the class for centipedes? ......ANSWER......chilopoda
how many legs do centipedes have per body segment?
......ANSWER......2
which insect has fangs? ......ANSWER......centipede
what is the class for millipedes? ......ANSWER......diploda
pg. 3
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how many legs do millipedes have per body segment?
......ANSWER......4
what is the class for spiders, scorpions, ticks, and mites?
......ANSWER......arachnida
which class has pedipalps? ......ANSWER......arachnida
how many body regions does an adult insect have? ......ANSWER......3
how many legs does an adult insect have? ......ANSWER......6
how many wings does an adult insect have? ......ANSWER......0,2, or 4
name each level of classification from top to bottom
......ANSWER......kingdom phylum class order family genus species
what is the key to the exoskeleton? ......ANSWER......the cylinder shape
The exoskeleton can be either ________ and ________ or ________
and ___________. ......ANSWER......thick and rigid, thin and flexible
pg. 4
ENT 201 Exam 1: NCSU: Sorenson Exam questions
fully solved & updated (Latest Update 2026)
UPDATE!!
what are the first 2 distant ancestors to insects?
......ANSWER......trilobites, horseshoe crabs
how old are trilobites? ......ANSWER......400-600 million years
how old are horseshoe crabs? ......ANSWER......350 million years
What are the first insect fossils? ......ANSWER......tiny, wingless, soft
bodied
how old are the first insect fossils? ......ANSWER......380 million years
when were the most modern insect relatives present?
......ANSWER......180 million years ago
what are 5 examples of bugs through history? ......ANSWER......cave
drawings, china silkworms, egypt honeybees, scarabs, greece body
pests
pg. 1
,2|Page
who is the father of zoology?` ......ANSWER......aristotle
who was the first to catalog insect crop pests?
......ANSWER......theophrastus
who wrote Historia Naturales Book 11? ......ANSWER......pliny the elder
Who wrote Zoologia physica ......ANSWER......Johann Sperling
who wrote Historia Insectorum? ......ANSWER......John Ray
Who wrote Systema Naturae 10th -- the binomial system of
nomenclature? ......ANSWER......Linnaeus
Almost 2/3 of all identified living species are ______________.
......ANSWER......athropods
more than half of all identified living species are _____________.
......ANSWER......insects
how many insect species have been identifed so far?
......ANSWER......about 1,000,000
pg. 2
,3|Page
there are about how many individual insects for every human?
......ANSWER......200,000,000
what is the phylum of insects? ......ANSWER......arthropoda
what does arthropoda mean? ......ANSWER......jointed foot
what 4 features make up an insect? ......ANSWER......exoskeleton,
segmented body, jointed apendages, bilateral symmetry
what is the class for crabs, lobsters, etc.? ......ANSWER......crustacea
what is the class for centipedes? ......ANSWER......chilopoda
how many legs do centipedes have per body segment?
......ANSWER......2
which insect has fangs? ......ANSWER......centipede
what is the class for millipedes? ......ANSWER......diploda
pg. 3
, 4|Page
how many legs do millipedes have per body segment?
......ANSWER......4
what is the class for spiders, scorpions, ticks, and mites?
......ANSWER......arachnida
which class has pedipalps? ......ANSWER......arachnida
how many body regions does an adult insect have? ......ANSWER......3
how many legs does an adult insect have? ......ANSWER......6
how many wings does an adult insect have? ......ANSWER......0,2, or 4
name each level of classification from top to bottom
......ANSWER......kingdom phylum class order family genus species
what is the key to the exoskeleton? ......ANSWER......the cylinder shape
The exoskeleton can be either ________ and ________ or ________
and ___________. ......ANSWER......thick and rigid, thin and flexible
pg. 4
