The Smaller Ecdysozoan Phyla - Zoology | Biology+

Course

Animal Biology

Study Pack

Set 1: Zoology: an Evolutionary and Ecological Perspective

Set 2: Cells, tissues, organs, and Organ Systems of Animals

Set 3: Cell Division and Inheritance

Set 4: Evolution: History and Evidence

Set 5: Evolution and Gene Frequencies

Set 6: Ecology: Preserving the Animal Kingdom

Set 7: Animal Taxonomy, phylogeny, and Organization

Set 8: Animal-Like Protists: the Protozoa

Set 9: Multicellular and Tissue Levels of Organization

Set 10: The Smaller Lophotrochozoan Phyla

Set 11: Molluscan Success

Set 12: Annelida: the Metameric Body Form

Set 13: The Smaller Ecdysozoan Phyla

Set 14: The Arthropods: Blueprint for Success

Set 15: The Pancrustacea: Crustacea and Hexapoda

Set 16: Ambulacraria: Echinoderms and Hemichordates

Set 17: Chordata: Urochordata and Cephalochordata

Set 18: The Fishes: Vertebrate Success in Water

Set 19: Amphibians: the First Terrestrial Vertebrates

Set 20: Reptiles: Diapsid Amniotes

Set 21: Birds: Reptiles by Another Name

Set 22: Mammals: Synapsid Amniotes

Set 23: Protection, support, and Movement

Set 24: Communication I: Nervous and Sensory Systems

Set 25: Communication II: the Endocrine System and Chemical Messengers

Set 26: Circulation and Gas Exchange

Set 27: Nutrition and Digestion

Set 28: Temperature and Body Fluid Regulation

Set 29: Reproduction and Development

Set 13 The Smaller Ecdysozoan Phyla

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Set 13 The Smaller Ecdysozoan Phyla

(Multiple Choice)

Free

Much of the success of nematodes is due to their

A)hydrostatic skeleton.
B)well-developed circular and longitudinal muscles.
C)outer, noncellular, collagenous cuticle.
D)ciliated covering.
E)parthenogenetic reproduction.

Answer

(Multiple Choice)

Free

Ecdysozoan animals

A)are all pseudocoelomates.
B)are all acoelomates.
C)are all coelomates.
D)molt their cuticle.
E)derive their nutrients from symbiotic relationships with algae.

Answer

(Multiple Choice)

Free

Structures that function in chemoreception and are found at the anterior and posterior ends of nematodes are the

A)spicules and lips.
B)bursa and the nucleus.
C)scalids and the placids.
D)zonites and the mastax.
E)amphids and the phasmids.

Answer