Connect Access Card for Biology
11th Edition
ISBN: 9781259670091
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 33, 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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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.
A ciliated feeding structure in the larval stage is a characteristic of aa. trochozoan.b. parazoan.c. lophophoran.d. deuterostome.
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
Chapter 33 Solutions
Connect Access Card for Biology
Ch. 33 - Prob. 1UCh. 33 - Animals are unique in the fact that they possess...Ch. 33 - In animal sexual reproduction the gametes are...Ch. 33 - The evolution of bilateral symmetry was a...Ch. 33 - A fluid-filled cavity that develops completely...Ch. 33 - Which of the following statements is NOT true...Ch. 33 - Which of the following characteristics is used to...Ch. 33 - With regard to classification of animals, the...Ch. 33 - The coelom a. is a synapomorphy for the clade...Ch. 33 - A coelomate organism may have which of the...
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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_forwardYou find a flatworm during a field trip and discover that the embryos undergo spiral cleavage. What also must be true of this animal? (can be more than one anwser) E. regulative development B. mosaic development C. it is acoelomate D. All of these A. bilateral symmetryarrow_forwardWhich of the following features does not distinguish humans as a member of phylum Chordata? a. Human embryos undergo indeterminate cleavage. b. A spinal cord runs along an adult human’s dorsal side. c. Human embryos exhibit pharyngeal arches and gill slits. d. The human coccyx forms from an embryonic tail.arrow_forward
- Which of the following statements is NOT true regarding protostome diversity? A. Of the 30 animal phyla, more than 2/3 (22 phyla) are protostomes. B. There are more mollusk species than Priapula. C. There are more lophotrochozoans than ecdysozoans. D. A major feature distinguishing different developmental characteristics.arrow_forwardWhich of the following applies to a squid? a. Cephalization c. Complete digestive tract b. True coelom d. All of these are correct.arrow_forwardA blastopore... A. Is the opening through which food enters a gastrovascular cavity B. Is an opening to the water-filled central cavity of a sponge C. Is the opening to the primitive gut that gives rise to the mouth in a deuterostome eucoelomate D. Is the open end of the archenteron that appears during gastrulation E. None of the abovearrow_forward
- 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_forwardWhich of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrataarrow_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_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_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
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