Cnidarians And Ctenophores - Integrated Principles of Zoology | Biology+

Course

Animal Biology

Study Pack

Set 1: Life: Biological Principles and the Science of Zoology

Set 2: The Origin and Chemistry of Life

Set 3: Cells As Units of Life

Set 4: Cellular Metabolism

Set 5: Genetics: a Review

Set 6: Organic Evolution

Set 7: The Reproductive Process

Set 8: Principles of Development

Set 9: Architectual Pattern of an Animal

Set 10: Taxonomy and Phylogeny of Animals

Set 11: Unicellular Eukaryotes

Set 12: Sponges and Placozoans

Set 13: Cnidarians and Ctenophores

Set 14: Acoelomorpha, Platyzoa, and Mesozoa

Set 15: Polyzoa and Kryptrochozoa

Set 16: Molluscs

Set 17: Annelids and Allied Taxa

Set 18: Smaller Ecdysozoans

Set 19: Trilobites, Chelicerates, and Myriapods

Set 20: Crustaceans

Set 21: Hexapods

Set 22: Chaetognaths, echinoderms, and Hemichordates

Set 23: Chordates

Set 25: Early Tetrapods and Modern Amphibians

Set 26: Amniote Origins and Nonavian Reptiles

Set 28: Mammals

Set 29: Support, Protection, and Movement

Set 30: Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Set 31: Homeostasis: Internal Fluids and Respiration

Set 32: Digestion and Nutrition

Set 33: Nervous Coordination: Nervous System and Sense Organs

Set 34: Chemical Coordination: Endocrine System

Set 35: Immunity

Set 36: Animal Behavior

Set 37: Animal Distribution

Set 38: Animal Ecology

Set 13 Cnidarians And Ctenophores

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Set 13 Cnidarians And Ctenophores

(Multiple Choice)

Free

The traditional view of cnidarians relative to germ layers is that cnidaria possess

A)only one germ layer,the ectoderm,that differentiates into the two tissue layers.
B)two germ layers,ectoderm and mesoderm.
C)two germ layers,endoderm and mesoderm.
D)two germ layers,ectoderm and endoderm.
E)definitely all three germ layers including the mesoglea as it is derived from ectoderm.

Answer

(Multiple Choice)

Free

The presence of amoeboid cells and fibers in the mesoglea,as well as lack of a velum,would indicate that a medusa was in the class

A)hydrozoa.
B)scyphozoa.
C)anthozoa.
D)ctenophora.
E)cubozoa.

Answer

(Multiple Choice)

Free

A hydra moves by

A)nematocysts.
B)expelling water from the gastrovascular cavity.
C)contraction of the nerve net.
D)epitheliomuscular cells in the epidermis.
E)epitheliomuscular fibers in the mesoglea.

Answer