Oceanography Chapter 14 Homework – Flashcards
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How does sonar work?
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a sound signal is bounced off the ocean floor.
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What does sonar data tell us about the seafloor?
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Depth, shape and composition
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How are echolocation and sonar different?
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Echolocation is used by dolphins and whales, whereas sonar is a data collection tool developed by people.
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Where do dolphins generate sounds for use in echolocation?
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In the blowhole
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What does a dolphin's melon do?
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The melon focuses sound waves during emission
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The stinging cells used by cnidarians to capture prey are called _______.
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nematocysts
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The fins used by fishes primarily for maneuvering are ______.
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Pectoral and pelvic
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Radiolarians and coccolithophorids are examples of zooplankton.
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False
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Sharks have lunate caudal fins.
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False
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The function of a swim bladder is
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to allow a fish to change position in the water column
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The oxygen-storing compound in the red muscle tissue of fishes is called ______.
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Myoglobin
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Because of the scarcity of food in the deep-sea environment, many organisms rely on _______ as their principal source of food.
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Detritus
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Individual fishes within schools maintaining their spacing through visual contact and ______.
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the lateral line system
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A symbiotic relationship in which both organisms benefit is called _______.
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Mutualism
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The California gray whale is unusual because it stirs up bottom sediment in order to feed.
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True
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Probably the greatest threat to gray whale calves today is _____.
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Killer whales
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Match the organism with its correct taxonomic classification: Bottlenose dolphin
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order Cetcea, suborder Odontocetti
