1. Introduction to Biology

Which is the best definition of directional selection?

Why do organisms compete in an ecosystem?

Which of the following best describes Jean-Baptiste Lamarck's ideas about evolution, and why are they considered incorrect today?

A bird with a sharp beak and strong talons is most likely adapted to eat which type of food source?

Which of the following correctly matches a type of predation with its example?

Which statement best summarizes what happened to peppered moths in England after the Industrial Revolution?

How did Bernard Kettlewell test his hypothesis about natural selection in peppered moths?

Which bird trait is an example of a derived trait?

Which term best describes a heritable trait that increases an organism's chance of survival and reproduction in a particular environment?

Why are advantageous traits more likely to be passed onto offspring in the process of natural selection?

What observations did Darwin make about the tortoises of the Galapagos Islands that contributed to his theory of natural selection?

Which statement is true about conservation versus preservation in the context of natural selection and evolution?

Which term best describes the process in which unequal survival and reproduction result from the presence or absence of particular traits within a population?

Which of the following factors can cause secondary succession in an ecosystem?

In evolutionary terms, an organism's fitness is measured by its __________.