BIO 1112 Final

In animals, it is believed that the most common mode of speciation is:

Allopatric

Which of the following traits is unique to arthropods?

An exoskeleton

The Biological Species Concept cannot be applied to

Extinct organisms

Which of the following is NOT a prezygotic barrier to interbreeding between different species?

Hybrids between the two species are infertile.

What is the relationship between coral and zooxanthellae?

Mutually symbiotic; zooxanthellae provide the coral with nutrition, while the coral provide zooxanthellae with carbon dioxide.

Horses and donkeys can breed and produce offspring known as mules. Yet horses and donkeys remain separate species. This is because of the __________ of mules.

Sterility

Speciation without geographic isolation is called:

Sympatric speciation

For a new species to arise:

a barrier to gene flow between two or more populations must exist.

The method of speciation that has led to the production of wheat, bananas, potatoes, and coffee is called:

allopolyploidy

Protists are all alike in that they all are:

eukaryotic

An air environment, gravity, and desiccation are three challenges that were addressed in the evolution of reptiles. What three evolutionary innovations addressed these challenges?

lungs, better limb support, and the amniotic egg

The molluscan mantle is used primarily for:

producing the shell

Each group of animals below is paired with a type of body symmetry. Which of these pairings is incorrect?

round worm

In terms of evolutionary trees, what exactly is a node?

the point at which two groups diverge on an evolutionary tree

The lineage that first separated from the common ancestor of all animals, and retains many of the same primitive features to this day, includes which of the following modern organisms?

the sponge

Which of the following is true about evolutionary success?

A successful organism can find food, escape predators, and reproduce.

The most primitive group of animals that had lungs were the:

AMPHIBIANS

Which of the following substances was NOT part of the mixture used in the Urey-Miller experiments?

Carbon dioxide

If formerly interbreeding organisms are prevented from the production of fertile offspring, ____________ has occurred.

Reproductive isolation

Which of the following is true of ALL animals?

They are capable of movement at some stage of their life cycle.