Individual Worksheet
Subject: Biology
Topic: Cartilaginous and Bony Fish
Class/Age: 8
Student's Name: ___________________________
Date: ___________________________
Instructions for the Student:
Hello! This worksheet will help you learn about the two main groups of fish: Cartilaginous and Bony Fish. Read each task carefully. Write your answers in the spaces provided or in the tables. Use your textbook, notes, or other learning materials if needed. Try your best!
Task 1: Key Characteristics (2 points)
Below is a table with characteristics. Write "C" if the characteristic is typical for Cartilaginous fish (like sharks and rays), "B" if it is typical for Bony fish (like salmon or goldfish), or "Both" if it applies to both groups.
| Characteristic | C / B / Both |
|---|---|
| Skeleton made of cartilage | |
| Have a swim bladder | |
| Gills are covered by an operculum (gill cover) | |
| Skin covered with placoid scales (rough, tooth-like) | |
| Fertilization is usually external (eggs fertilized outside the body) |