Bio Topic 4.1a Eval – Emergence of New Species from Preexisting Species

Which change would most likely lead to speciation?

Which statement best describes how geographic isolation can contribute to land animal speciation?

On the Portuguese island of Madeira, six distinct species of house mice have been identified.  Which statement explains how different species most likely developed?

A botanist studied two groups of rice plants to determine how they are related.  Both groups of plants have similar shapes, but one group has longer stalks.  When the botanist cross-pollinated plants from one group with plants from the other group, the seeds produced did not sprout or grow.

Which of the following conclusions is best supported by this information?

A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of reproductive barrier is this?

The genitalia of the male damselfly varies in shape. Certain males can only hold onto & mate with females whose genitalia fit.  What type of reproductive barrier is this?

Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?

The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?

A new river forms and splits two populations, causing ______________ speciation.

Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?