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    Top 5 NEET Chemistry Chapters to Score 55+ Marks

    Characterstic Features of Cyclostomata MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

    Quick Facts

    • Class Cyclostomata - Characteristics Features is considered one of the most asked concept.

    • 18 Questions around this concept.

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    A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae, after  metamorphosis, return to the ocean, is

    Choose the correct statement.

    Concepts Covered - 1

    Class Cyclostomata - Characteristics Features
    • This class includes the most primitive vertebrates, the lampreys and hagfishes
    • Hagfishes are scavengers and lampreys are ectoparasite
    • They have a sharp, circular jawless mouth with horny teeth
    • They have a slender eel-like body.
    • They do not have paired fins and scales
    • They have an elongated body bearing 6-15 pairs of gill slits
    • The cranium and vertebral column are made up of cartilage.
    • They have closed circulatory system with two-chambered heart
    • Cyclostomes are marine but migrate for spawning to fresh water. After spawning, within a few days, they die.
    • Their larvae, after metamorphosis, return to the ocean.

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    Class Cyclostomata - Characteristics Features

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