BIO 322 Prep Exam – 2025 Fully Updated Study Guide!
(Graded A+) 100% Correct Answers
Phylum Arthropoda Subphyla (4) - Subphylum Trilobitomorpha
Subphylum Uniramia
Subphylum Crustacea
Subphylum Chelicerata
Which phyla are primarily dioecious? - Phylum arthropoda
Phylum mollusca
Phylum echinodermata
Phylum Chordata
Phylum Arthropoda ___ development. - triploblastic
Arthropods are _______ both internally and externally. - segmented
tagmosis - fusion of segments into functional units
chitin - Polysaccharide found in arthropod exoskeletons (rigid)
Arthropods have ______ appendages. - jointed
ommatidia (and what phylum) - compound eyes (phylum Arthropoda)
Phylum Arthropods and mollusca have a ______ body plan. - coelomate
coelomate - body cavity lined by tissue completely derived from mesoderm
Arthropods have a(n) _____ circulatory system where blood flows into ______. - open; sinuses
,hemocoel - blood cavity
Arthropods have a ________ and ____-_______ gut. - complete; well-developed
____ is absent in Arthropods except in sperm in some groups - Cilia.
ecdysis - process of molting
another term for dioecious used in Phylum Arthropoda - Gonochoristic
Subphylum Trilobitomorpha - Trilobites
The trilobites are - extinct
extant means - still in existence
The trilobites lived in _______ environments. - marine
pygidium - posterior end
Trilobites had a distinct _____ fused to the _______. - cephalon (head); pygidium
Trilobites had two well-developed ________ ____. - compound eyes
Trilobites had ______ pairs of appendages. - 4
mortality plate - many organisms fossilize at the same time
thorax - abdomen
Class Myripoda subclasses (2) - Subclass Chilopoda (centipedes)
, Subclass Diplopoda (millipedes)
Subphylum Uniramia Classes (2) - Class Myrapodia
Class Insecta (Hexapoda)
Uniramians possess ________ to eat. - mandibles
mandibles - whole limb jaws with a single biting surface at the tip
Uniramians have ___ & ___ appendages. - multiarticulate and uniramous
multiarticulate - jointed
Uniramians have a _______ system with ____ for gas exchange. - tracheal; spiracles
spiracles - Openings in the exoskeleton leading to gas exchange system
Uniramians use ___ for excretion - Malphigian tubules
malphighian tubules - "Kidneys"
Uniramians have _______ eyes with ______. - compound; ocelli
ocelli - light sensing organs
Subclass Chilopoda - the centipedes
Centipedes have ____ pair(s) of legs per somite. - one
Centipede leg count can vary from _____-_______ pairs. - 15-174
(Graded A+) 100% Correct Answers
Phylum Arthropoda Subphyla (4) - Subphylum Trilobitomorpha
Subphylum Uniramia
Subphylum Crustacea
Subphylum Chelicerata
Which phyla are primarily dioecious? - Phylum arthropoda
Phylum mollusca
Phylum echinodermata
Phylum Chordata
Phylum Arthropoda ___ development. - triploblastic
Arthropods are _______ both internally and externally. - segmented
tagmosis - fusion of segments into functional units
chitin - Polysaccharide found in arthropod exoskeletons (rigid)
Arthropods have ______ appendages. - jointed
ommatidia (and what phylum) - compound eyes (phylum Arthropoda)
Phylum Arthropods and mollusca have a ______ body plan. - coelomate
coelomate - body cavity lined by tissue completely derived from mesoderm
Arthropods have a(n) _____ circulatory system where blood flows into ______. - open; sinuses
,hemocoel - blood cavity
Arthropods have a ________ and ____-_______ gut. - complete; well-developed
____ is absent in Arthropods except in sperm in some groups - Cilia.
ecdysis - process of molting
another term for dioecious used in Phylum Arthropoda - Gonochoristic
Subphylum Trilobitomorpha - Trilobites
The trilobites are - extinct
extant means - still in existence
The trilobites lived in _______ environments. - marine
pygidium - posterior end
Trilobites had a distinct _____ fused to the _______. - cephalon (head); pygidium
Trilobites had two well-developed ________ ____. - compound eyes
Trilobites had ______ pairs of appendages. - 4
mortality plate - many organisms fossilize at the same time
thorax - abdomen
Class Myripoda subclasses (2) - Subclass Chilopoda (centipedes)
, Subclass Diplopoda (millipedes)
Subphylum Uniramia Classes (2) - Class Myrapodia
Class Insecta (Hexapoda)
Uniramians possess ________ to eat. - mandibles
mandibles - whole limb jaws with a single biting surface at the tip
Uniramians have ___ & ___ appendages. - multiarticulate and uniramous
multiarticulate - jointed
Uniramians have a _______ system with ____ for gas exchange. - tracheal; spiracles
spiracles - Openings in the exoskeleton leading to gas exchange system
Uniramians use ___ for excretion - Malphigian tubules
malphighian tubules - "Kidneys"
Uniramians have _______ eyes with ______. - compound; ocelli
ocelli - light sensing organs
Subclass Chilopoda - the centipedes
Centipedes have ____ pair(s) of legs per somite. - one
Centipede leg count can vary from _____-_______ pairs. - 15-174
