1. Amphibia
2. Frogs are cold-blooded, have moist skin, undergo metamorphosis from a larval (tadpole) stage to an adult, and typically live part of their life in water and part on land—characteristics defining the class Amphibia.
3. Amphibians are considered unique because they were the first vertebrates to transition from water to land, bridging aquatic and terrestrial life, and they exhibit a dual-life cycle (aquatic larva and terrestrial/adult).
4. a. Dorsal side — top of the frog’s back
b. Ventral side — underside of the frog
c. Anterior end (Cranial) — head end
d. Posterior end (Caudal) — tail end (rear of body)
e. Medial — toward the midline of the body
f. Lateral — away from the midline, toward the sides
5. a. dorsal side color — typically green, brown, or mottled for camouflage
b. ventral side color — usually lighter, often white or cream, for countershading
6. Your frog in cm — [student measures and records actual length]
7. How many toes are present? — 5 per hind leg (total 10)
Are the toes webbed? — yes
Parent Tip: Review the logic above to help your child master the concept of frog dissection worksheet answer key.
