M.S. Biology Final

Which image shows a photosynthetic organism?

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Which statement about the fossil record is true?

• The fossil record shows that life has existed on Earth for billions of years.

• The fossil record can show roughly when species appeared but not when they went extinct.

• The fossil record is made up of a subset of the fossils that have been found on Earth.

The following evolutionary tree shows the relationships between species A, B, C and D.

According to the evolutionary tree, which two species are most closely related?

• A and D

• B and D

• C and D

• A and C

In a food web, an arrow points from a rockfish to a kelp bass.

Which of these is true about the organisms described above?

• Kelp bass and rockfish eat each other.

• Kelp bass eat rockfish.

• Rockfish eat kelp bass.

Which of these are inputs to cellular respiration?

Choose 2.

• carbon dioxide

• water

• oxygen

• glucose

Scientists can compare the body structures of ______ to find anatomical evidence of evolution.

• modern and extinct species

• modern species, but not extinct species

Consider the following passage.

"In a group of plants, the genes responsible for small leaves became less common over multiple generations. This occurred because humans chose to allow only plants with large leaves to reproduce."

Which type(s) of selection could be responsible for the genetic change described in the passage?

• only artificial selection

• only natural selection

• either artificial or natural selection

Choose the best word or phrase to fill in the blank.

The energy in most ecosystems originally comes from ______.

• biomass

• the sun

• sugars

What typically happens to ecosystems that lose biodiversity?

• They become less healthy.

• They become more healthy.

• Biodiversity does not effect the ecosystem

One way that strawberry plants reproduce is by sending out runners.

Runners are horizontal stems that can produce new strawberry plants.

These new plants have the same genes as the parent plant.

A gardener takes some runners from an adult plant, and plants them in a different location to start a new strawberry patch. The gardener notices that during the next harvest, the new strawberry plants produced larger fruit than the original patch.

The difference in strawberry harvests is most likely due to which of the following?

• genetic factors

• environmental factors