BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 33, Problem 8U
Summary Introduction
Species refer to the taxonomic group in which organisms are grouped together according to the ability of the organisms to interbreed among themselves. Species reproduce to produce fertile offspring and different species are separated from one another through reproductive barriers.
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In terms of numbers of species, the most successful phylum on the planet is the
a. Mollusca.
b. Arthropoda.
c. Echinodermata.
d. Annelida.
Suppose you discover a new species of animal that does not have body segments, but is triploblastic, coelomate, and cephalized. Under the molecular phylogenetic scheme, you would allocate it to which phylum?
A)Platyhelminthes.
B)Arthropoda.
C)Nematoda.
D)Mollusca.
E)Echinodermata.
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.
Chapter 33 Solutions
BIOLOGY
Ch. 33.1 - Prob. 1LOCh. 33.2 - Prob. 1LOCh. 33.2 - Prob. 2LOCh. 33.3 - Prob. 1LOCh. 33.4 - Prob. 1LOCh. 33.4 - Prob. 2LOCh. 33.4 - Prob. 3LOCh. 33.5 - Prob. 1LOCh. 33.6 - Prob. 1LOCh. 33.6 - Distinguish between the Errantia and Sedentaria.
Ch. 33.6 - Describe adaptations in leeches for feeding on the...Ch. 33.7 - Prob. 1LOCh. 33.7 - Prob. 2LOCh. 33.8 - Prob. 1LOCh. 33.8 - Prob. 2LOCh. 33.9 - Prob. 1LOCh. 33.9 - Prob. 2LOCh. 33.9 - Prob. 3LOCh. 33 - In the flatworm, flame cells are involved in what...Ch. 33 - Prob. 2UCh. 33 - Prob. 3UCh. 33 - Prob. 4UCh. 33 - Prob. 5UCh. 33 - Prob. 6UCh. 33 - Prob. 7UCh. 33 - Prob. 8UCh. 33 - Prob. 9UCh. 33 - Prob. 10UCh. 33 - Examples of decapods are a. centipedes and...Ch. 33 - Prob. 1ACh. 33 - Prob. 2ACh. 33 - Prob. 3ACh. 33 - Scientists studying the Chesapeake Bay have...Ch. 33 - Chitin is present in a number of invertebrates, as...Ch. 33 - Prob. 3SCh. 33 - Prob. 4S
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- The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of (A) a body cavity. (B) a complete digestive tract. (C) mesoderm. (D) tissues.arrow_forwardA mantle and mantle cavity are present in: a. phylum Echinodermata. b. phylum Adversoidea. c. phylum Mollusca. d. phylum Nemertea.arrow_forwardWhile studying the embryonic development of an organism, you determine that the blastopore of the developing gastrula has developed into a mouth. Based on the Animalia tree discussed in class, which one of the following phyla could this NOT be? A. Chordata B. Mollusca C. Porifera D. Annelida E. Arthropodaarrow_forward
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- A fishing net brings up a soft bodied animal with a coiled external shell. How can you determine whether the animal is a gastropod or a cephalopod? A) give one unique trait that would allow you to identify the organism as a member of class gastropoda. B) give one unique trait that would allow you to identify the organism as a cephalopodarrow_forwardA mantle and mantle cavity are present in _____. a. class Oligochaeta b. class Bivalvia c. class Polychaeta d. class Hirudineaarrow_forwardThe tarsier belongs in the suborder ____ because it shares characteristics with both prosimians and anthropoids. a. Haplorhini b. Strepsirhini c. Anthropoidea d. None of the above; the tarsier is placed in its own suborder.arrow_forward
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