Question

7Drag each label to the correct location.Categorize the structures as homologous or analogous.the mammalian tail andthe human coccyx (tail bone)the leaves of pitcher plantsand cactithe flippers of penguinsand dolphinsthe bills of ducksand platypusesHomologousthe shells of turtlesand crabsAnalogous

Answer 1

Homologous structures have the same physical features that share a common ancestor. Their features act on different functions. Analogous structures is present on features of different species with similar functions but not in structure. They did not came from a common ancestor.

1. the mammalian tail and

the human coccyx (tail bone) - homologous structures. They came from a common ancestors.

2. the leaves of pitcher plants

and cacti - homologous structures. They have different shapes and functions but came from the same ancestors.

3. the flippers of penguins

and dolphins - analogous structures. They are not closely related. They have the same traits.

4. the bills of ducks

and platypuses - homologous structures. They developed their bill from a common ancestor.

5. the shells of turtles

and crabs - analogous structures. They are not closely related. They have different structures.