1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 32, Problem 9U
The coelom
a. is a synapomorphy for the clade comprising protostomes and deuterostomes.
b. evolved multiple times convergently.
c. is always an indicator of close evolutionary relationship.
d. forms within the endoderm.
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You read a research article presentsing new phylogenetic data demonstrating that species that contain a pseudocoelom are not closely related to one another. This suggests that:
A.
evolution of the pseudocoelom occurred more than once.
B.
the pseudocoelom evolved before the coelom.
C.
pseudocoelomates are more closely related to acoelomates than one another.
D.
pseudocoelomates are more closely related to coelomates than one another.
A ciliated feeding structure in the larval stage is a characteristic of aa. trochozoan.b. parazoan.c. lophophoran.d. deuterostome.
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.
Chapter 32 Solutions
1 SEM ACC W/RAVEN CARDED
Ch. 32.1 - Prob. 1LOCh. 32.2 - Prob. 1LOCh. 32.2 - Prob. 2LOCh. 32.2 - Prob. 3LOCh. 32.3 - Prob. 1LOCh. 32.3 - Prob. 2LOCh. 32.3 - Prob. 3LOCh. 32.4 - Prob. 1LOCh. 32.4 - Prob. 2LOCh. 32.5 - Prob. 1LO
Ch. 32.5 - Prob. 2LOCh. 32.5 - Prob. 3LOCh. 32.6 - Prob. 1LOCh. 32.6 - Prob. 2LOCh. 32 - Prob. 1IQCh. 32 - Prob. 1UCh. 32 - Animals are unique in the fact that they possess...Ch. 32 - In animal sexual reproduction the gametes are...Ch. 32 - The evolution of bilateral symmetry was a...Ch. 32 - A fluid-filled cavity that develops completely...Ch. 32 - Which of the following statements is NOT true...Ch. 32 - Which of the following characteristics is used to...Ch. 32 - With regard to classification of animals, the...Ch. 32 - The coelom a. is a synapomorphy for the clade...Ch. 32 - A coelomate organism may have which of the...Ch. 32 - Which of the following cell types of a sponge...Ch. 32 - Prob. 12UCh. 32 - Prob. 13UCh. 32 - The following diagram is of the blastopore sage of...Ch. 32 - Prob. 2ACh. 32 - Prob. 3ACh. 32 - Which of the following cell layers is not...Ch. 32 - Prob. 2S
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- A deuterostome has what type of cleavage Group of answer choices A. spiral, indeterminate at 8 cells B, radial, indeterminate at 8 cells C. spiral, determinate at 8 cells D. radial, determinate at 8 cellsarrow_forwardThe epitheliomuscular cells found in cnidarians anticipate the muscular system of more complex animals. The absence of muscle tissue in cnidarians primarily reflects... A. The fact that cnidarians are basal metazoans, having specialised cells but lacking tissues B. The presence of only two germ layers, ectoderm and endoderm, in cnidarian embryos C. The fact that cnidarians lack a nervous system D. The sessile lifestyle observed in all cnidarians E. All of the above explain the absence of muscle tissue in cnidariansarrow_forwardWhich of the following is not possible? a. radially symmetrical diploblast b. diploblastic eucoelomate c. protostomic coelomate d. bilaterally symmetrical deuterostomearrow_forward
- Each of the following is a critical difference between protostomes and deuterostomes except A. deuterostomes have bilateral symmetry B. the blastopore becomes the anus in deuterostomes C. the blastopore becomes the mouth in protostomes D. protostomes have radial symmetryarrow_forwardA member of the protostome group of animals a. has no symmetry. b. has an anus derived from the blastopore. c. has a mouth derived from the blastopore. d. has a mouth derived from the primitive groove.arrow_forwardAn 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. Nematodaarrow_forward
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