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Questions and Answers
What is the primary characteristic of the Ascon type of sponge?
Which of the following best describes the cellular structure of an Ascon sponge?
What is the primary function of the flagellated cells in the Ascon sponge?
How does water enter the central cavity of an Ascon-type sponge?
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What type of environment does the sponge example Leucosolenia thrive in?
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What is the primary method of reproduction for Obelia sp.?
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Which part of the Obelia sp. serves as the mouth opening surrounded by tentacles?
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What is the composition of the hydroid stalk in Obelia sp.?
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How does Obelia sp. maintain its colony structure?
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What structural feature provides protection for the individual feeding polyp in Obelia sp.?
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What is the primary method of reproduction in sponges?
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Which of the following components is NOT found in the body structure of a sponge?
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What type of sponge is known for having a soft fibrous skeleton and is highly absorbent?
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What occurs after the fertilization of male and female gametes in sponges?
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Where are good quality sponges commonly found?
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What is the scientific name of the Turkey cup sponge?
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Which of the following is true about the honeycomb sponge?
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What characteristic is common to all sponge types as indicated in the description?
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What is a distinctive feature of the phylum Porifera concerning their cellular structure?
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Which of the following statements about Porifera is true regarding their symmetry?
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What mechanism do Porifera use for water circulation within their bodies?
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What type of reproduction is NOT characteristic of the phylum Porifera?
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What is the composition of the internal skeleton found in Porifera?
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What is the primary characteristic that differentiates the polyp form from the medusa form in Cnidarians?
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Which of the following classes within the Phylum Coelentrata includes jellyfish?
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What defines the body cavity of Cnidarians?
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Which structure is primarily responsible for the stinging capability of Cnidarians?
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What type of symmetry do organisms in the Phylum Coelentrata exhibit?
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What is the distinct body shape of a medusa in Cnidaria?
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Which body shape is characteristic of sea anemones?
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Which of the following is NOT a member of the Phylum Cnidaria?
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Coral reefs are primarily composed of which type of organism?
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What is the primary feature that differentiates Cnidarians from other marine organisms?
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What type of skeleton do corals possess?
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Which of the following organisms is mentioned as a type of coral?
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In which type of environments are corals primarily found?
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What do corals primarily feed on?
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Which of the following statements best describes coral reefs?
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What distinguishes the Leucon type of sponge from the Sycon type?
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Which of the following best describes the body structure of the Sycon type of sponge?
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Which characteristic is NOT true for the Sycon type of sponge?
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What material primarily composes the body structure of the Leucon type sponge?
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What role do choanocytes play in both Sycon and Leucon sponges?
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What is the primary function of epithelial cells in colonial animals?
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Which type of cell in colonial animals can differentiate into various other cell types?
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What substance do glandular cells in colonial animals secrete?
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Where are stinging cells primarily located in colonial animals?
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What is the function of sensory cells in colonial animals?
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In which class does the organism Aurelia sp. belong?
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What characteristic is typical of the ectoderm in colonial animals?
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How do stinging cells in colonial animals aid in capturing prey?
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Study Notes
Phylum: Porifera (Sponges)
- Sponges are sessile animals; they spend their lives attached to rocks.
- Sponges are multicellular organisms, and different types of cells migrate within the organism, performing different functions.
- About 15,000 species of sponges exist currently.
- Sponges belong to the Subkingdom: Parazoa.
- Subkingdoms of animals are Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Mollusca, Echinodermata, Arthropoda, Chordata.
Ascon type
- Leucosolenia is an example of this type.
- Small, simple, and vase-like in structure.
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Description
Explore the fascinating world of sponges, a unique group of multicellular organisms belonging to the phylum Porifera. Learn about their structure, classification, and the Ascon type exemplified by Leucosolenia. This quiz will help you understand the diversity and characteristics of these remarkable creatures.