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Home Q & A Board Biology-Related Homework Help General Biology
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Nana Yaa Nana Yaa
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6 years ago
Reptiles and birds differ from amphibians in that they lack a free larval stage. What adaptation allowed the elimination of this stage?
 
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6 years ago
The development of an amniotic egg made the need for a free living larval form unnecessary. These egg types contain amniotic fluid, which protects developing embryos and keeps them moist. These eggs are also supplied with generous amounts of yolk for nourishing the embryos until they grow and hatch at an advanced stage.
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