Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 31, Problem 9TYK
Summary Introduction
Introduction:
Ecdysozoa is a group of animals that includes arthropods, nematode, and other small phyla. The group is supported by morphological characters and the animals growing by ecdysis. The animals in this group have skin or an exoskeleton covering their body.
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Which of the following applies to a squid? a. Cephalization c. Complete digestive tract b. True coelom d. All of these are correct.
Which of the following would be found in a
sea urchin (phylum Echinodermata)?
A. A dorsal hollow nerve cord
B. An endoskeleton
C. Schizocoelus coelom formation
D. A trochophore larva
E. All of the above
An unidentified animal is noted to possess the following characteristics:
triploblastic eucoelomate body
a cuticle that is shed via ecdysis
To which of the following phyla does this organism belong?
Group of answer choices
A. Echinodermata
B. Annelida
C. Arthropoda
D. Nematoda
Chapter 31 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 31.1 -
1. What characteristics distinguish animals from...Ch. 31.1 - How does the ability of animals to move through...Ch. 31.2 - What is a tissue, and what three primary tissue...Ch. 31.2 - What type of body symmetry do humans have?Ch. 31.2 - What is the functional significance of the coelom?Ch. 31.2 - Prob. 4SBCh. 31.3 - Which major groupings of animals defined on the...Ch. 31.3 - Prob. 2SBCh. 31.4 - Prob. 1SBCh. 31.4 - Prob. 2SB
Ch. 31.5 - Prob. 1SBCh. 31.5 - Prob. 2SBCh. 31.5 - What do ctenophores eat, and how do they collect...Ch. 31.6 - Prob. 1SBCh. 31.6 - Prob. 2SBCh. 31.6 - Prob. 3SBCh. 31.6 - Prob. 4SBCh. 31.7 - Prob. 1SBCh. 31.7 - If an arthropods rigid exoskeleton cannot be...Ch. 31.7 - Prob. 3SBCh. 31.7 - Prob. 4SBCh. 31 - Prob. 1TYKCh. 31 - Prob. 2TYKCh. 31 - Protostomes and deuterostomes typically differ in:...Ch. 31 - Prob. 4TYKCh. 31 - Which organ system is absent in flatworms (phylum...Ch. 31 - Prob. 6TYKCh. 31 - Prob. 7TYKCh. 31 - Which body region of an insect bears the walking...Ch. 31 - Prob. 9TYKCh. 31 - What is the major morphological innovation seen in...Ch. 31 - Prob. 11TYKCh. 31 - Prob. 12TYKCh. 31 - Discuss Concepts What are the relative advantages...Ch. 31 - Prob. 14TYKCh. 31 - Prob. 15TYKCh. 31 - Prob. 16TYKCh. 31 - Prob. 1ITD
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- Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrataarrow_forwardIn which of the following aspects are nematodes more complex than flatworms? a. External cephalization b. None among the other choices c. Musculature of the body wall d. All of the other choices (except "None among....") e. Osmoregulatory and excretory systemsarrow_forwardWhich of the following is NOT a characteristic of annelids? A.they have a closed circulatory system B.they reproduce through sexual reproduction C.there are both male and female earthworms D.they are able to sense vibrations in the groundarrow_forward
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- Segmentation, first seen in annelids, allows evolutionary advantages bya. allowing more fluid movement for less energy expense.b. specialization of segments to carry out different functions.c. allowing coelom development.d. concentrating sensory and nervous tissues and organs in the direction of motion.arrow_forwardWhich of the following is not possible? a. radially symmetrical diploblast b. diploblastic eucoelomate c. protostomic coelomate d. bilaterally symmetrical deuterostomearrow_forwardIn arthropods, the tracheal system isa. a unique set of structures that function in ingestion and digestion offood.b. a series of branching tubes extending into the body that allow for gasexchange.c. a series of tubules that allow waste products in the blood to bereleased into the digestive tract.d. the series of ommatidia that form the compound eye.e. none of the above.arrow_forward
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