Vertebrates and Invertebrates online pdf activity for 4 | Live ... - Free Printable

Let's solve this worksheet step by step.

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Part 1: Choose the correct word from the box

The word box includes:
- amphibians
- birds
- exoskeleton
- fish
- invertebrates
- mammals
- reptiles
- vertebrates

Now, let’s match each description:

1. Animals with a backbone → vertebrates
*(Vertebrates have a backbone or spinal column.)*

2. Animals without a backbone → invertebrates
*(Invertebrates do not have a backbone.)*

3. A hard outer covering on many invertebrates → exoskeleton
*(Many invertebrates like insects and spiders have an exoskeleton made of chitin.)*

4. Vertebrates covered in feathers → birds
*(Birds are the only vertebrates that have feathers.)*

5. Vertebrates with soft, moist skin → amphibians
*(Frogs, toads, and salamanders have moist, permeable skin.)*

6. The vertebrate group that humans belong to → mammals
*(Humans are mammals — warm-blooded, have hair, and produce milk.)*

7. Vertebrates that live only in water → fish
*(Fish are aquatic vertebrates that breathe through gills.)*

8. Vertebrates with dry scaly skin → reptiles
*(Snakes, lizards, turtles, and crocodiles have dry, scaly skin.)*

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Part 2: Identify whether each animal is a vertebrate or invertebrate

Now look at the pictures:

9. Fly → invertebrate
*(Flies are insects; they have no backbone and an exoskeleton.)*

10. Human → vertebrate
*(Humans have a backbone and are mammals.)*

11. Shark → vertebrate
*(Sharks are fish — they have a skeleton and a backbone.)*

12. Spider → invertebrate
*(Spiders are arachnids; they lack a backbone.)*

13. Snail → invertebrate
*(Snails are mollusks; they don’t have a backbone.)*

14. Penguin → vertebrate
*(Penguins are birds — they have feathers and a backbone.)*

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✔ Final Answers:

#### Part 1:
1. vertebrates
2. invertebrates
3. exoskeleton
4. birds
5. amphibians
6. mammals
7. fish
8. reptiles

#### Part 2:
9. invertebrate
10. vertebrate
11. vertebrate
12. invertebrate
13. invertebrate
14. vertebrate

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✔ This completes the worksheet! Let me know if you'd like it formatted for printing or need explanations for any term.