Exam 3- Bio Final

Your job is to classify a newly discovered animal species your initial studies reveal that...to what phylum could this animal belong?

Mollusks

If you were hiking and wanted to show off your supercool biology knowledge regarding the differences between gymnosperm and angiosperms, what main characteristics might you see with your naked eye that would help you impress your friends?

Seeded flowers vs seeded cones.

While walking in a tropical forest near water, you come upon a large 20 ft tall plant that shows no evidence of seed production. The plant is most likely a:

Tail

A population of rabbits introduced onto an island rapidly for a few years and then the growth slowed down and stabilized. Why might the population have become stable?

The carrying capacity was reached

Why is the African Elephant considered a keystone species?

The disappearance of elephants would result in huge changes in the ecological structure of the community

Which of the following would increase biotic potential?

As generations go by, organisms reproduce earlier and earlier

Which of these is an adaptation that all vertebrates have no matter what?

A skull

Which of these statements is FALSE about animals?

All of the above are actually TRUE.

What evolutionary characteristic differentiates lampreys from hagfishes?

Backbone

Which of the following is NOT a correct match of a chordate adaptation and its advantage?

Bones- Light enough for movement

An insect population grows exponentially until early winter freeze kills almost all of them. The next spring the insect population grows exponentially again. This is a good example of:

Boom and Bust cycles

Close community interactions such as predation and mutualism, cause changes in each of the interacting species over time. This is an example of:

Coevolution

Mutualism is similar to _____ in that both types of relationships do not involve any harm?

Commensalism

Most predators feed preferentially on the most abundant prey. This is a direct example of:

Density dependent environmental resistance

Invasive species are notable in ecosystems because they often:

Grow exponentially and overshoot carrying capacity

Which of the following would reduce the human ecological footprint?

Increasing deaths

Comparison of the current human ecological footprint to Earth's carrying capacity suggests:

The population cannot sustain its current level of resource use without further harming the ecosystem

Which has an evolutionary advantage: nonvascular or vascular seedless plants? What is the advantage?

Vascular seedless; can be larger.

Competition between two members of the same species is:

Very intense and is referred to as intraspecific

An example of a density-independent factor that affects a population growth is:

Winter frost killing your tomato plants