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Annelida, and others (Lecture 6) - BIO 342 questions with correct answers $14.49   Add to cart

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Annelida, and others (Lecture 6) - BIO 342 questions with correct answers

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  • Bio 342
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  • Bio 342

Trochophore development Correct Answer-Annelida • Anterior of the Prototroch becomes the prostomium • Teloblastic growth • Pygidium: derived from below the Telotroch Annelida Correct Answer-• Trochophore larva • Segmentation • Teloblastic growth • 4 bundles of chaetae per seg...

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  • August 4, 2024
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  • 2024/2025
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  • Bio 342
  • Bio 342
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Annelida, and others (Lecture 6) - BIO 342 questions
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Trochophore development Correct Answer-Annelida
• Anterior of the Prototroch becomes the prostomium
• Teloblastic growth
• Pygidium: derived from below the Telotroch


Annelida Correct Answer-• Trochophore larva
• Segmentation
• Teloblastic growth
• 4 bundles of chaetae per segment (NOT setae)


Prostomium Correct Answer-Annelida
• First segment of trunk
• Around the mouth


Teloblastic growth Correct Answer-Annelida
• How the trunk grows
• Grows anterior to posterior end during embryonic development
• It is extending itself at the end


Pygidium Correct Answer-Annelida
• Derived from below the Telotroch

, • Possesses the anus


Segmentation in Annelids Correct Answer-• Repetition of structures
• Each segment is individual unit (specialized structures within)
• Isolated by septum
• Gut, nerve cord, and blood vessel pass through septum
• Important for movement


Chaetae Correct Answer-Annelida
• Extends from the body
• Has canals in it
• Made of Beta-chitin
• Muscles associated with it, to let it extend, retract, and move
• Extend surface area to help move
• Variety of forms


Polychaeta Correct Answer-• Parapodia
• Nuchal organ


Parapodia Correct Answer-Polychaeta
• Foot like extensions coming off the side
• Chatae are associated with the parapodia

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