Question

multiple select question
select all that apply
select all the adaptations in amphibians that allowed them to become successful on land.
denser skeleton
postanal tail
three - chambered heart
legs
amniotic egg
eyelids and acute hearing
simple lungs

Explanation:

• Denser skeleton: Provides better support against gravity on land.
• Three - chambered heart: Improves oxygen transport for terrestrial activity.
• Legs: Enables movement on land.
• Eyelids and acute hearing: Adaptations for the terrestrial environment (protection of eyes, detection of sounds in air).
• Simple lungs: Allows breathing air on land.
• Postanal tail is a general chordate feature and not specifically an adaptation for land success in amphibians. Amphibians do not have amniotic eggs (reptiles, birds, and mammals have amniotic eggs which are an adaptation for more independent land reproduction).

Answer:

denser skeleton, three - chambered heart, legs, eyelids and acute hearing, simple lungs