Natural Selection and Extinction

One of the unifying principles of the theory of evolution is perpetual change. What is perpetual change?

• Species never change.

• All species resist change.

• All species are in a continuous state of change.

• All species will die and a new species will takes its place in the ecosystem.

When a species are so tightly connected, that the evolutionary history of one affects other and vice versa is called _______________________.

• coevolution

• niches

• adaptation

• natural selection

Part of the niche that a species occupies is called ____?

• habitat

• bio niche

• fundamental niche

• realized niche

When genes and characteristics are distributed due to migration and movement of organisms is called _________.

• genetic flow

• genetic drift

• genetic transportation

• genetic diversity

The full potential range of physical, chemical, and biological conditions and resources it could theoretically use if there were no direct competition from other species is called ______.

• fundamental niche

• realized niche

• speciation

• ecosystem

Most of what we know of early life comes from

• pictures

• glaciers

• rocks

• fossils

A species of spider only lives in a certain species of tree. It only eats one type of bug that often eats the tree leaves. this spider can only live in an area where the temperature is above 60 degrees Fahrenheit. This spider is said to be a(n) ___.

• generalist

• autotroph

• unsuccessful

• specialist

Right now, the theory is that live developed over two main phases. The two main phases are:

• chemical evolution and biological evolution

• dinosaur evolution and mammal evolution

• plants and animal evolution

• reptiles and amphibian evolution

A species functional role in a ecosystem is called a __.

• needs

• adaptation

• niche

• habitat

What would result if in a species of an organism, the creature who exhibited a blend of two traits demonstrated the most success?

• directional selection

• mass extinction

• stabilizing selection

• disruptive selection