Amphibians & Reptiles
COMMERCIAL NATURE POSTER
Price = $8.99
Size = 24x36
These animals are often
confused, so they are treated together. “Amphibian” comes from the Greek amphi,
meaning “both,” and bios, meaning “life.” It has two meanings. First, the
animals physically change. Reproduction is accomplished through external
fertilization. The female spawns her eggs in water where they are fertilized by
the male. After hatching, most amphibians undergo a dramatic change known as
metamorphosis. They slowly change from fishlike, water-dwelling animals to ones
better suited for life on land. Fins and gills become legs and lungs. The most
well-known example is the change from tadpole to frog. Second, the term also
refers to these animals first living in the water and later on land.
Reptiles reproduce by sexual intercourse and internal fertilization, just like
mammals. Amniotic eggs develop within the mother’s abdomen. Once they are
sufficiently developed, the mother lays them and they hatch. However some
reptiles give birth to live young.
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