Bio1331 Animals - Evolution - Ecdysozoans (Lecture Five)

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    Complete the following sentence:For an ecdysozoan to grow, the cuticle must be _____ and replaced with a larger one.

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Bio1331 Animals - Evolution - Ecdysozoans (Lecture Five) - Quiz

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  • 2. 

    Complete the following sentence:________ is a term meaning the moulting of the cuticle to enable growth.

  • 3. 

    Please fill answer below_______

  • 4. 

    The second clade of Ecdysozoans taught in the lectures are the most dominant animals on the Earth, accounting for at least 75% of described species and found in nearly all habitats on the planet.Name this species.

  • 5. 

    Complete the following sentence:One of the key features of the ecdysozoans is the ___________, a tough, non-cellular, secreted body covering.

  • 6. 

    Complete the following sentence:Some arthropod joints contain a substance called _______, which stores energy on compression and releases it efficiently, allowing them to jump.

  • 7. 

    Complete the following:Insects have many adaptations to gas exchange.One of these adaptions is the _________, external openings on the thorax and abdomen. These can be closed to regulate water loss.

  • 8. 

    True or False?Ecdysozoans had a single common ancestor.

    • True

    • False

    Correct Answer
    A. True
  • 9. 

    Complete the following sentence:________ were an early arthropod, with simple and repetitive body segmentation and appendages.

    Correct Answer
    Trilobites
  • 10. 

    The substance that composes the exoskeleton is leathery in its pure form, but becomes harder when encrusted with calcium carbonate.It is found within the endocuticle of the exoskeleton.Name this substance.

    Correct Answer
    Chitin
  • 11. 

    True or False?Butterflies were the first insects to fly.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    FALSE!
    Dragonflies were in fact the first insects to fly.

    Rate this question:

  • 12. 

    Approximately when did moulting evolve?

    • >500 million years ago

    • >5 million years ago

    • >5 billion years ago

    • >500 thousand years ago

    Correct Answer
    A. >500 million years ago
  • 13. 

    The Nematodes are a clade of Ecdysozoans.Tick everything below that this group of organisms are/have.

    • Bilaterally symmetrical

    • Radially symmetrical

    • Triploblastic

    • Diploblastic

    • Segmented

    • Unsegmented

    • Thick, multi-layered cuticle

    • Thinly layered cuticle

    • Pseudocoelomate

    • Acoelomate

    • Coelomate

    Correct Answer(s)
    A. Bilaterally symmetrical
    A. Triploblastic
    A. Unsegmented
    A. Thick, multi-layered cuticle
    A. Pseudocoelomate

Quiz Review Timeline (Updated): Mar 19, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 25, 2015
    Quiz Created by
    Elly Crook
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