Let's go through each statement one by one and determine whether it applies to
amphibians (A),
reptiles (R), or
both (B).
---
1. They are cold-blooded.
✔ Both amphibians and reptiles are cold-blooded (ectothermic) — they rely on external sources of heat to regulate body temperature.
👉
Answer: B
---
2. They have scales.
- Reptiles have dry, scaly skin.
- Amphibians have moist, smooth skin (no scales).
👉
Answer: R
---
3. They breathe air.
- Both amphibians and reptiles breathe air (though amphibians may also use gills at certain life stages).
- Adults of both groups primarily breathe air using lungs.
👉
Answer: B
---
4. They lay eggs.
- Most amphibians lay eggs in water.
- Most reptiles lay eggs on land (some give birth to live young, but egg-laying is common).
- So,
both lay eggs.
👉
Answer: B
---
5. They have moist smooth skin.
- This is a key feature of
amphibians (like frogs and salamanders).
- Reptiles have dry, rough, scaly skin.
👉
Answer: A
---
6. They live the first part of their lives in the water and the last part on land.
- This describes
amphibians like frogs (egg → tadpole in water → adult on land).
- Reptiles do not typically undergo this kind of metamorphosis; they hatch as miniature adults.
👉
Answer: A
---
7. They breathe with lungs and gills.
-
Amphibians: Many use gills as larvae and lungs as adults. Some can also breathe through skin.
-
Reptiles: Only use lungs; no gills in adulthood.
- So, only
amphibians use both lungs and gills during their life cycle.
👉
Answer: A
---
8. They have four or no legs.
-
Amphibians: Frogs and salamanders have four legs; some caecilians have no legs.
-
Reptiles: Lizards and turtles have four legs; snakes have no legs.
- So,
both groups include animals with four legs and those with no legs.
👉
Answer: B
---
✔ Final Answers:
| Statement | A | R | B |
|---------|---|---|---|
| They are cold-blooded. | | |
✔ |
| They have scales. | |
✔ | |
| They breathe air. | | |
✔ |
| They lay eggs. | | |
✔ |
| They have moist smooth skin. |
✔ | | |
| They live the first part of their lives in the water and the last part on land. |
✔ | | |
| They breathe with lungs and gills. |
✔ | | |
| They have four or no legs. | | |
✔ |
---
Summary:
-
A (Amphibians): #5, #6, #7
-
R (Reptiles): #2
-
B (Both): #1, #3, #4, #8
This worksheet helps distinguish key traits between amphibians and reptiles! 🐸🐍
Parent Tip: Review the logic above to help your child master the concept of 3rd grade science worksheet animals.
