Biology Learning Check Review

Question 1

What is the difference between gene flow and genetic drift?

Answer 1

Gene flow is a migration of genes from one population to another whereas genetic drift is the changing of allele frequencies.

Question 2

What is Natural Selection?

Answer 2

Natural selection is the process through which each species adapt to their environment

Question 3

Compare and contrast geographical, temporal, and behavioral isolation.

Answer 3

Geographical is the physical separation of members in a population, Temporal is the reproduction in different seasons or time of day, and Behavioral is the difference of their mating rituals. They are all similar because they don’t allow the species (same or different) to ever interbreed together.

Question 4

What is the difference between gradualism and punctuated equilibrium?

Answer 4

Gradualism is where organisms slowly change over time whereas punctuated is when there is long periods of no change but is then followed by rapid periods of change.

Question 5

Analogous structures are the result of _________ evolution, which is caused by __________ environments and needs.

Answer 5

Convergent, similar

Question 6

Homologous structures are the result of __________ evolution, which is caused by __________ environments and needs.

Answer 6

Divergent, different

Question 7

Define the four types of symbiosis.

Answer 7

Mutualism- Both organisms benefit
Parasitism-One organism benefits while the other doesn’t benefit
Commensalism- One organism benefits while the other is not affected
Predation- Organism is killed and eaten by other organism.

Question 8

What type of organisms will be in the lowest level in an energy pyramid?

Answer 8

Producers

Question 9

What type of organisms will be in the highest level in an energy pyramid?

Answer 9

Tertiary or Quaternary consumers

Question 10

How do the numbers change as you go up the pyramid?

Answer 10

They go down by 10% the higher you go up

Question 11

What happens to the rest of the energy?

Answer 11

It is given to decomposers

Question 12

The job of nitrogen-fixing bacteria?

Answer 12

To change nitrogen into nitrates

Question 13

List the levels of organization in order from smallest to largest

Answer 13

Cell,Tissue, Organ, Organ system, Organism, Population, Community, Ecosystem, Biome, Biosphere

Question 14

If an organism is a source of energy for a tertiary consumer, what trophic level would the organism belong in?

Answer 14

3rd trophic level

Question 15

What is the difference between primary and secondary succession?

Answer 15

Primary succession starts at barren rock whereas secondary starts at soil.

Question 16

Give an example of primary and secondary succession

Answer 16

Primary is a volcanic eruption and Secondary is a wildfire

Question 17

List the order of Primary Succession

Answer 17

Barren rock, Lichens, Annuals, Perennial, Shrubs and bushes, softwood, and then hardwood

Question 18

List the order of Secondary Succession

Answer 18

Lichens, Annuals, Perennial, Shrubs and bushes, softwood, and then hardwood.

Question 19

Will succession increase or decrease the biodiversity of an ecosystem?

Answer 19

Increase

Question 20

What is the role of decomposers in an ecosystem?

Answer 20

Decomposers digest dead plants and animals to further recycle the nutrients within the ecosystem

Question 21

Look at Evolution Review Flashcards for the Evolution Vocabulary

Answer 21

Look at Evolution Review Flashcards for the Evolution Vocabulary