Homologous structures can be best be described as structures

are so similar that they imply a common ancestor

have the same structures and functions

have the same structures

had a function in an ancestor but don't have that function today

Homologous structures can be best be described as structures that are are so similar that they imply a common ancestor.

Option A

Explanation:

In evolution a number of organisms have lost some of their structures and a number of organisms have gained some of their structures for their survival. According to Darwin , the most fittest organism has survived.

For exhibiting this many organisms have attained several modifications. So when we look into homologous structures in 2 different species we can thereby relate and tell that they are from a common ancestor.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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