unit 7 concept 1

Question 1

Ecology

Answer 1

the study of relationships

• Between 2 organisms
• Between an organism and its evniornment

Question 2

Ecology requires us to

Answer 2

unerstanding of what it means to be an organism/a living thing

Question 3

Characteristics of life (6)

Answer 3

1. Be composed of one (unicellular) or more cells (multicellular).
2. Capable of growth (development, and becoming larger)
3. Be capable of reproduction (producing offspring).
4. Demonstrate the ability to respond to outside stimuli.
5. As a population, be able to adapt to the environment and evolve
6. Have a metabolism, meaning both consume energy and produce waste.

Question 4

3. Be capable of reproduction (producing offspring).

Answer 4

• Reproduction can be:
  Sexual = 2 parents produce genetically unique offspring together

Asexual = 1 parent produces genetically identical offspring

Question 5

4. Demonstrate the ability to respond to outside stimuli

Answer 5

Stimulus = a change in an organism’s environment
 (cause)

Response = how an organism reacts to a change in
 its environment (effect)

Question 6

Levels of ecological organization (6)

(least complex to more complex due to like more interaction) single organisms -> entire biosphere

Answer 6

1. organism
2. population
3. community
4. ecosystem
5. biome
6. biosphere

Question 7

organism

Answer 7

individual member of species or population

Question 8

population

Answer 8

multiple organisms of the same species living together
- eg. all the goats in a field

Question 9

community

Answer 9

multiple populations of different species living together

• All the goats birds plants insects squirrels, etc. living in a field

Question 10

ecosystem

Answer 10

community PLUS all of the abiotic factors in the environment.

• Ex. All of the goats, birds, plants, insects, squirrels, etc. in a field AND the temperature, precipitation, etc.

Question 11

Biome

Answer 11

multiple ecosystems that share similar characteristics but are located in different parts of the planet

• eg. grassland, tundra

may have same species living there but they may differ

biome classifying helps scientists predict what life can exist in a certain climate

Question 12

Biosphere

Answer 12

the zone of life on earth, encompassing all of earths ecosystems

• All interconnected with this global web of energy and matter exchange

Question 13

Biodiversity

Answer 13

the variety of organisms considered at all levels, from populations to ecosystems

Question 14

Taxonomy

Answer 14

field of biology that classifies organisms, organizing them based on similar characteristics

Question 15

All life is organized into a (8)

Answer 15

• Domain
• Kingdom
• Phylum
• Class
• Order
• Family
• Genus
• Species

Question 16

Binomial nomenclature

Answer 16

2-name naming system by Carolus Linnaeus that names organisms after their 2 most specific classification levels.

genus species

Question 17

Cladogram

Answer 17

diagram that shows relatedness of organisms.

⁃ Does NOT show ancestral relationships like a phylogenetic tree does.

Question 18

Dichotomous Key

Answer 18

tool used for identifying organisms based on their characteristics