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UTA Zoology Practical 1 Questions With Complete Solutions

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UTA Zoology Practical 1 Questions With Complete Solutions ________________________________________ .3 layers of Mollusc shell - ANSWER-Nacre - innermost. Calcium carbonate. Prismatic layer - middle. hardest. Periostracum - outermost. .Adductor muscles - ANSWER-used to close bivalve ...

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  • October 13, 2024
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  • UTA Zoology Practical 1
  • UTA Zoology Practical 1
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UTA Zoology Practical 1 Questions With Complete
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.3 layers of Mollusc shell - ANSWER-Nacre - innermost. Calcium carbonate.

Prismatic layer - middle. hardest.

Periostracum - outermost.



.Adductor muscles - ANSWER-used to close bivalve shell around body



.Adult Clonorchis sinesis - ANSWER-Phylum Platyhelminthes

Class Trematoda



.Amictic females - ANSWER-(rotifers) produce diploid eggs



.Amoebocytes or Archaeocytes - ANSWER-(amoeboid cells) Migrate through sponge's mesophyll.



Carry out intracellular digestion, produce spongin and spicules.



(Stem-cell like... can be any specialized cell)



.Anhydrobiosis - ANSWER-rotifers can dessicate and go long periods without food or water.



.Apopyle - ANSWER-Opening into spongocoel from radial canals in Sycanoid sponges.



.Ascaris dissection (female) - ANSWER-Phylum Nemata

,Class Chromadorea



.Ascaris dissection (male) - ANSWER-Phylum Nemata

Class Chromadorea



.Ascaris male and female - ANSWER-Males have hooked tails

Females are bigger



Phylum Nemata

Class chromodorea



.Asconoid Sponges - ANSWER-Small and simplest sponges.



Canal system formed by Ostia, Spongocoel, and Osculum.



.Atoke - ANSWER-Immature Nereis.



.auricles - ANSWER-(flatworms) contain chemosensory cells and cells for tactile sensation



.Automorphies - ANSWER-Traits/Characters that are only shared with one group and no other group



.Bilateral Symmetry - ANSWER-A shape that has only 1 axis (the sagittal axis) that divides the body into 2
halves (mirror images)



.Bivalve anatomy - ANSWER-



.bivalve ctenidia (slide) - ANSWER-

, .Bivalves Structures - ANSWER-Incurrent/Excurrent Siphon; Suprabranchial chamber; Crystalline style;
Labial palps; Ctenidia; Adductor muscles; umbo.



.Body forms of Cnidarias - ANSWER-Polyp and Medusa



.Chiton - ANSWER-Phylum Mollusca

Class Polyplacophora



8 Plates on the dorsal body. Know Ctenidia, Mouth, Foot, Mantle, Anus & Plates



.Chiton (dorsal) - ANSWER-



.Chiton (ventral) - ANSWER-



.Choanocytes - ANSWER-Flagellated cells with a collar ring of microvilli inside the plasma membrane of
the sponges.



Allow feeding through phagocytosis.



.Circular muscle- - ANSWER-allows earthworm to stretch body



.Clade Clitellata - ANSWER-((Phylum Annelid))



Member posses a clitellum - band of tisue that is used to produce slime tube during reproduction.



Class Oligochaeta- earthworm

Class Hirudinea- leeches



Hermaphroditism, no parapodia

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