BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 32, Problem 2A
Summary Introduction
Introduction:
Ecdysozoa constitutes a clade of animals that undergo molting at least once in their lifetime. It includes nematodes and arthropods.
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Serial segmentation is a key characteristic of which of the following phyla?
a. Mollusca
b. Brachiopoda
c. Bryozoa
d. Annelida
To which of the following groups would a species that does not molt, possesses a coelom, and has a trochophore larva belong?
a. Ecdysozoa
b. Parazoa
c. Platyzoa
d. Lophotrochozoa
"Stalked jellyfishes" belong to which class?
A. Staurozoa
B. Scyphozoa
C. Anthozoa
D.Hydrozoa
E. Cubozoa
Chapter 32 Solutions
BIOLOGY
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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- If chaetognaths belong to Lophotrochozoa, they would be more closely related to animals like earthworms which have a trochophore larva. If they belong to Ecdysozoa, they would... A. Be more closely related to animals that have a lophophore feeding structure B. Be more closely related to animals that are diploblastic C. Be more closely related to animals without symmetry D. Be more closely related to animals that shed their outer cuticle E. Both B and D are true O A O B O C O D O Earrow_forwardBased on the diagram, which of the following pairs of organisms have the closest evolutionary relationship? A. Radiolarians and Forams B. Diatoms and Euglenozoans C. Ciliates and Radiolarians D. Diplomonads and Euglenozoansarrow_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
- Which characteristic(s) is/are not typical of protozoan cells?a. locomotor organelle c. sporeb. cyst d. trophozoitearrow_forwardplease explain What is the primary characteristic of the Ecdysozoa (Nematoda + Arthopoda)? 1. They all have spiral cleavage. 2. They shed their exoskeletons and have the ability to molt. 3. None of the options in correct 4. They all have segmentation. 5. They all have tropchophore larvae.arrow_forwardWhich of the following classes of arthropod possess chelicerae? a. Chilopoda b. Crustacea c. Hexapoda d. Chelicerataarrow_forward
- All of the following are true of Ctenophores except: A. Some species have long tentacles B. They catch food with stingers C. They move with tiny rows of cilia along their outsides D. They are diploblasticarrow_forwardA coelomate organism may have which of the following characteristics? a. Circulatory system b. Internal skeleton c. Larger size than a pseudocoelomate d. All of the choices are correct.arrow_forwardA zoologist is investigating an unidentified marine animal specimen. They note that this creature has radial symmetry along its short axis, but has bilateral symmetry in a perpendicular axial plane. In addition, its peripheral surface appears to have several lines of cilia used for movement in the water. Which phylum is most likely to contain this specimen? Group of answer choices A. Annelida B. Mollusca C. Cnidaria D. Ctenophoraarrow_forward
- Which of the following groups includes all of the others? a. Protostomes c. Eumetazoans b. Echinoderms d. Ecdysozoansarrow_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_forwardWhich 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_forward
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