Questions and Answers
What is Hydra?
What does Coelenterata encompass?
Animal phyla Cnidaria and Ctenophora
What are tentacles used for in animals?
Grasping and feeding
The flattened basal surface by which coelenterate polyps attach is called the ______.
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What is a hypostome?
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What is a bud in the context of Hydra?
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What does Platyhelminths refer to?
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What is an acetabulum?
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What is a gonopore?
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What does triploblastic mean?
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What is an acoelomate?
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What class do trematodes belong to?
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What is Fasciola commonly known as?
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What is liver rot?
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What is Laurer's canal?
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Study Notes
Hydra
- Genus of small, fresh-water organisms belonging to the phylum Cnidaria and class Hydrozoa.
- Features simple body structure with a tubular form, typically featuring tentacles.
Coelenterata
- Encompasses Cnidaria (e.g., coral, true jellies, sea anemones) and Ctenophora (comb jellies).
- Characterized by simple tissue organization with two layers of cells and radial symmetry.
Tentacles
- Flexible, elongated organs predominantly found in invertebrates; commonly present in pairs.
- Function primarily for grasping and feeding; they operate as muscular hydrostats.
Basal Disc
- The flattened surface in coelenterates that enables polyps to attach firmly to substrates.
Hypostome
- The oral tip of hydrozoan cnidarians, surrounded by tentacles, facilitating feeding.
Bud
- In Hydra, buds form through repeated cell division, developing into new individuals that later detach from the parent.
Platyhelminths
- A phylum consisting of simple, bilaterian, unsegmented, soft-bodied invertebrates, commonly known as flatworms.
Acetabulum
- Saucer-shaped attachment organ in annelids and flatworms, functioning as a specialized sucker for parasitic adaptations.
Gonopore
- A genital pore in invertebrates, serving as the opening for common reproductive ducts in both males and females.
Triploblastic
- Refers to organisms possessing three primary germ layers: ectoderm, mesoderm, and endoderm.
Acoelomate
- Animals lacking a fluid-filled body cavity that separates the digestive tract from the body wall.
Trematoda
- Class within the phylum Platyhelminthes comprising parasitic flatworms, commonly referred to as flukes.
Fasciola
- Genus known as liver flukes, parasitic trematodes affecting the liver tissue of various mammals, including humans.
Liver Rot
- A disease caused by liver flukes, particularly impacting sheep and cattle; characterized by symptoms like sluggishness and anemia.
Laurer's Canal
- A part of the reproductive system in trematodes, analogous to a vagina, used during copulation by the flukes.
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Description
This quiz focuses on identifying and classifying Hydra and Fasciola hepatica, two distinct organisms studied in 11th-grade zoology. Through flashcards, it highlights their unique features and biological characteristics. Test your knowledge of Cnidaria and Coelenterata.
