Biology Unit 1

Question 1

What are Biotic Factors?

Answer 1

Living Things in an environment

Question 2

What are Abiotic Factors?

Answer 2

Nonliving factors in an environment

Question 3

Symbiosis

Answer 3

Living things have a close relationship in an environment

Question 4

Mutualism

Answer 4

Both species benefit

Question 5

Commensalism

Answer 5

One species benefits and the other is not affected

Question 6

Parasitism

Answer 6

One species benefits and the other is harmed

Question 7

Levels of Organization (smallest to largest)

Answer 7

Organism, Population, Community, Ecosystem, Biome

Question 8

Organism

Answer 8

1 Living thing

Question 9

Population

Answer 9

All the organisms of a species that live together in an area

Question 10

Community

Answer 10

All the populations of organisms that live together in an area

Question 11

Ecosystem

Answer 11

All the living and non-living things found in an area

Question 12

Biosphere

Answer 12

Portion of the earth that supports living things

Question 13

In what form does energy enter the ecosystem?

Answer 13

Sunlight

Question 14

Autotroph + Example

Answer 14

Use sunlight to make energy through photosynthesis (ex. Plants)

Question 15

Heterotroph (ex.)

Answer 15

Eats other organisms for energy (animals)

Question 16

Decomposer (ex.)

Answer 16

Breaks down dead for energy (Bacteria)

Question 17

How can energy flow be visualized?

Answer 17

Through food chains, food webs, and trophic pyramids

Question 18

Trophic Pyramid

Answer 18

Shows feeding relationships that pass energy through an ecosystem

Question 19

What is energy converted into?

Answer 19

Heat

Question 20

What % of energy is available at one level?

Answer 20

10

Question 21

True or False: Nutrients are not created nor destroyed?

Answer 21

True

Question 22

What 2 major categories are Biomes divided into?

Answer 22

Terrestrial Biomes (tundra, desert, rainforest) & Aquatic Biomes (Oceans, Seas, ponds, streams)

Question 23

Limiting Factor

Answer 23

Factor that affects an organisms ability to survive in an environment

Question 24

Succession

Answer 24

Natural changes and species replacement that take place in communities

Question 25

Pioneer Species

Answer 25

First living things to colonize an area

Question 26

Climax Community

Answer 26

Stable community that has little changes in species unless a disturbance occurs

Question 27

True or False: Not many organisms of the population can survive the Optimum Range.

Answer 27

False

Question 28

True or False: A small # of the population can endure harsher conditions of the Physiological Stress Zone?

Answer 28

True

Question 29

Can organisms survive in the intolerance zone?

Answer 29

Yes

Question 30

Exponential Growth

Answer 30

As a population gets larger it grows faster

Question 31

J-Curve

Answer 31

Shows exponential growth pattern

Question 32

Carrying Capacity

Answer 32

Maximum # of organisms that an environment can support

Question 33

S-Curve

Answer 33

Shows a population has leveled off because of limited resources

Question 34

Does the size of a prey population affect the size of the predator population?

Answer 34

Yes

Question 35

Prey

Answer 35

Organism that is killed

Question 36

Predator

Answer 36

Organisms that kills other organisms

Question 37

Biodiversity

Answer 37

Refers to the variety of species that live in an area

Question 38

Where does most of the world's biodiversity exist?

Answer 38

Near the equator

Question 39

True or False: The farther you move from the equator the less biodiversity you will find

Answer 39

True

Question 40

True or False: Smaller land masses have more biodiversity

Answer 40

False

Question 41

Habitat Loss

Answer 41

Destroys entire habitat

Question 42

Habitat fragmentation

Answer 42

Splits wilderness areas into smaller segments

Question 43

Habitat degradation

Answer 43

Damages habitat by polluting the environment

Question 44

Exotic Species

Answer 44

Non-Native species that can outcompete or kill native species

Question 45

Photosynthesis

Answer 45

Converts light energy (sunlight) into chemical energy (carbohydrates)

Question 46

Keystone Species

Answer 46

Species w/ large effect on ecosystem, causes ripple effect if lost

Question 47

Primary consumers eat...

Answer 47

plants (herbivore)

Question 48

Secondary Consumers eat...

Answer 48

primary consumer (carnivore)

Question 49

Tertiary Consumers eat...

Answer 49

Secondary consumers

Question 50

Ecology

Answer 50

Study of the interactions among living things and their surroundings

Question 51

Niche

Answer 51

How species live in their habitat

Question 52

Competitive Exclusion

Answer 52

When 2 species compete for same resources

Question 53

Predation

Answer 53

One organism captures and feed upon the other organism

Question 54

Factors that determine population size

Answer 54

Immigration, Births, Emigration, and Deaths

Question 55

Key factors of climate (there are 4)

Answer 55

Temperature, Water, Sunlight, and Wind