Embryology and Evolution Quiz

What are embryos?

• Microscopic organisms

• Unborn or unhatched organisms early in the course of development

• Fully formed organisms

• Adult organisms

What do embryos of different species have that provide evidence of evolution?

• Unique features

• Random features

• No features

• Homologous features

What do vertebrate embryos have that are homologous structures?

• Pharyngeal arches

• Gills

• Ears and jaw

• Fins

At what stage of development do embryos of related species have more features in common?

• Earlier stages

• Later stages

• No common features

• Middle stages

What happens to the tail of a human embryo at 8 weeks?

• It moves position to make up the bottom of the spine

• It falls off

• It grows longer

• It becomes the legs

What is the main similarity between embryos of different mammals and birds?

• They are quite similar at early stages

• They are quite similar at later stages

• They are completely different

• They have no similarities

Which animals have embryos?

• All animals with a spine

• Only humans

• Only birds

• No animals

What happens to the human embryo at 8-12 weeks of pregnancy?

• It disappears

• It remains the same

• It becomes fully formed

• It transitions to being a fetus

What is the purpose of studying embryological evidence of evolution?

• To learn about different species

• To observe the growth of embryos

• To understand the relationship between species

• To compare embryos of different species

What do embryos grow and develop in?

• No stages

• Random stages

• A single stage

• A series of stages