Questions and Answers
What are the environments of cephalaspidomorphi?
To other fish, cephalaspidomorphi are...
Ectoparasites
What fins do cephalaspidomorphi have?
Dorsal and caudal fins
The gill slits of cephalaspidomorphi are internal.
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How many vertebrae do cephalaspidomorphi have?
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Where is the brain of cephalaspidomorphi located?
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What kind of eyes do cephalaspidomorphi have?
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What do cephalaspidomorphi have instead of a jaw?
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Why don't cephalaspidomorphi have true teeth?
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What kind of tongue do cephalaspidomorphi have and how do they use it?
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Their lifecycle involves swimming to freshwater environments to ______.
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Describe the breeding process of cephalaspidomorphi.
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What happens when the eggs of cephalaspidomorphi hatch?
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Study Notes
Cephalaspidomorphi Overview
- Inhabit temperate marine and freshwater environments.
- Characterized as ectoparasites, attaching to other fish for sustenance.
Morphological Features
- Possess dorsal and caudal fins that aid in movement.
- Have external gill slits necessitating constant movement or water flow for respiration.
- Exhibit a singular vertebra that supports their structure.
- The brain is located dorsally within their anatomy.
Sensory and Feeding Adaptations
- Pineal eyes serve as life-detecting organs, contributing to their sensory perception.
- Instead of jaws, they feature sucking mouthparts for attachment and feeding.
- Lack true teeth as these structures are not associated with their nervous system.
- Utilize a rasping, muscular tongue equipped with tooth-like structures to scrape and access host tissue, aided by salivary glands that produce anticoagulants.
Lifecycle and Reproduction
- Adults primarily reside in ocean environments before migrating to freshwater to breed.
- Reproductive behavior involves females suctioning to rocks while males wrap around, facilitating external fertilization as eggs and sperm are released simultaneously.
- Upon hatching, larvae possess an atrium and atrial pore; juvenile stages function as sessile filter feeders for approximately three years before transitioning to free-swimming adults.
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Description
Test your knowledge of cephalaspidomorphi with these flashcards. This quiz covers various aspects of their characteristics, habitats, and biological features. Perfect for students studying marine biology or related fields.
