Class Osteichthyes MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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Class Osteichthyes - Characteristics Features is considered one of the most asked concept.
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16 Questions around this concept.
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EASYWhich one of the following categories of animals, is correctly described with no single exception in it?
Buoyancy in a bony fish is maintained with the help of
Match the following columns and select the correct options:
| Column I | Column II |
| (a) Aptenodytes | (i) Flying fox |
| (b) Pteropus | (ii) Angelfish |
| (c) Pterophyllum | (iii) Lamprey |
| (d) Petromyzon | (iv) Penguin |
Concepts Covered - 1
Class Osteichthyes - Characteristics Features
- These fishes have a bony skeleton.
- They have a large mouth with movable jaws.
- Their body is covered with cycloid or ctenoid scales. These scales are impermeable to water.
- The gill slits are covered with an operculum.
- They have a closed circulatory system with two-chambered heart having one atrium and one ventricle.
- They possess air bladder or swim bladder that maintains the buoyancy.
- They have defined lateral line system of sense organs.
- They are cold - blooded.
- They are oviparous and perform external fertilization.
Difference between Chondricthyes and Osteicthyes can be summarised as
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