University of California Davis Biology Questions

1.Which of the following is one of the main differences between reptiles and amphibians?

Group of answer choices

Most reptiles are endothermic and amphibians are ectothermic.

Amphibians are not tied to water for reproduction and reptiles are.

Reptiles have protective scales or feathers that contain keratin and amphibians do not.

Amphibians are amniotes and reptiles are not.

Reptile larvae typically undergo metamorphosis and amphibian larvae do not.

Which of the following is true about logistic population growth?

Group of answer choices

the growth rate of the population accelerates as it approaches the carrying capacity

it only occurs with unlimited resources

it is represented on a graph by an S-shaped curve

with this type of growth, the number of new individuals is proportional to the size of the population

it cannot happen indefinitely in nature

Which of the following traits helps classify a duck-billed platypus as a mammal?

Group of answer choices

the production of poison

mammary glands

the fact that it lays eggs

webbed feet

a sensitive snout

Which of the following was one of the differences between humans and apes that was discussed during lecture?

Group of answer choices

apes are bipedal, humans are not

apes use a precision grip, humans use a power grip

apes have an S-shaped spine, humans have a C-shaped spine

apes have opposable big toes while humans do not

the arms of apes are shorter than their legs, the legs of humans are shorter than their arms

Which of the following describes a K-selected species?

Group of answer choices

large number of offspring

tends to occur in relatively stable environments

tend to be favored in environments where populations are well below carrying capacity

low parental care

short-lived

Which of the following is a density-dependent factor that might affect population size?

Group of answer choices

a wildfire

an avalanche

a flood

a hurricane

a disease

An amniotic tetrapod that is endothermic and has no teeth most likely belongs to which class?

Group of answer choices

mammalia

reptilia

gastropoda

amphibia

cephalopoda

The human population has shown logistic growth so far.

Group of answer choices

True

False

You are a scientist working in a tropical rainforest. There, you discover a previously unidentified species! It has bilateral symmetry, a dorsal, hollow nerve cord, differentiated teeth, and its body is covered with fur. To which phylum does it most likely belong?

Group of answer choices

reptilia

porifera

mammalia

echinodermata

chordata

10.

An organism like a human or big-horned sheep for which mortality is highest late in life illustrates a Type I survivorship curve.

Group of answer choices

True

False

University of California Davis Biology Questions

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