Biology 2nd Semester Review FHHS

Question 1

DNA sequence is used to determine relatedness.Which # of differences shows a close relationship

Accepted Answer

5 differences

Question 2

What is required for a species to exist but NOT required for an individual to exist?

Accepted Answer

reproduction

Question 3

Studying embyrological development of vertebrates several species has led scientists to believe

Accepted Answer

All the of organisms descended from a common ancestor, Many body structures are homologous

Question 4

Kudzu are an invasive species. What conditions allowed the kudzu to spread across southern US?

Accepted Answer

Kudzu out-compete native pop. resulting in fewer native pop.

Question 5

Deer eat shrubs and grass. What would happen to the carrying capacity if there is a drought

Accepted Answer

Carrying Capacity will decrease

Question 6

How much energy is available to the 2nd level consumer is the producers have 10,000J of energy

Accepted Answer

1,000 J

Question 7

Which of the following is likely to change over time?

Accepted Answer

Frequency a specific allele appears in a species

Question 8

In this predator/prey graph, which factor may cause an increase in Lynx population?

Accepted Answer

Increase in prey population

Question 9

Members of a population that live long enough to reproduce

Accepted Answer

are the ones that are best suited to the environment

Question 10

A long period of environmental stability will lead to

Accepted Answer

little or no evolution

Question 11

What is the approximate carrying capacity of the Deer on WallaWalla Island?

Accepted Answer

78

Question 12

What is the primary way asexually reproducing organisms obtain genetic diversity?

Accepted Answer

mutations

Question 13

What is the most likely cause of the white pigmentation in this alligator?

Accepted Answer

mutation

Question 14

Which of the following is most likely to result in the formation of a new fish species?

Accepted Answer

An event divides the lake into 2 smaller lakes

Question 15

Homologous structures have similar structure but different functions. What might cause this?

Accepted Answer

Changes in function are the result environmental changes

Question 16

If this variation increases fitness, what will happen to the allele frequency in the population

Accepted Answer

The white allele frequency will increase

Question 17

Some worms eat at night, some worms during the day.Birds eat at night. What type of selection?

Accepted Answer

Directional

Question 18

Uncontrolled populataion growth may cause

Accepted Answer

depletion of nonrenewable resources

Question 19

Around 2.25 billion years ago, photosynthetic organisms pumped O2 into the atmosphere causing

Accepted Answer

Weathering of iron rich materials, all of these

Question 20

Nutrients such as nitrogen, phosphorus and carbon

Accepted Answer

Combine and recombine as they move through the food web

Question 21

How does photosynthesis create energy carrying molecules?

Accepted Answer

Energy from the sun is stored in carbohydrates

Question 22

A species has several variations in color. This species most likely reproduces through

Accepted Answer

sexual reproduction

Question 23

What type of reproduction would lead to a large # of genetically identical offspring?

Accepted Answer

Both 2 and 3

Question 24

Which is more closely related?

Accepted Answer

Salamanders and frogs

Question 25

What is an outcome if the environmental conditions change and species members don't adapt

Accepted Answer

extinction

Question 26

Higher rates of photosynthesis cause

Accepted Answer

lower rates of atmospheric carbon

Question 27

Which of the following are nonrenewable resources

Accepted Answer

fossil fuels

Question 28

Predict what may happen to the weasel population if there are fewer shrubs

Accepted Answer

The weasel pop.decreases because the mice will have starved

Question 29

In order for a group of organisms to be considered a species it must

Accepted Answer

produce fertile offspring

Question 30

Which of the following is true of photosynthesis?

Accepted Answer

Takes place in chloroplasts, produces O2 and glucose

Biology 2nd Semester Review FHHS

Questions 30

Biology 2nd Semester Review FHHS

Questions 30