Chpt 2 Vocab

Question 1

Biosphere

Answer 1

All the combined portions of the planet where life exists.
•water
•land
•atmosphere

Question 2

Abiotic factor

Answer 2

Non living organisms

Question 3

Biotic factor

Answer 3

Living organisms

Question 4

Population

Answer 4

Group of organisms of the same species

Question 5

Biological community

Answer 5

Interacting populations

Question 6

Ecosystem

Answer 6

Interacting populations in their communities abiotic factors

Question 7

Habitat

Answer 7

A place where an organism lives

Question 8

Niche

Answer 8

All strategies and adaptations a species uses in its environment; biotic and abiotic factors

Question 9

Symbiosis

Answer 9

Relationship or two organisms live close together

Question 10

Commensalism

Answer 10

One benefits the other is not helped or harmed (+0)

Question 11

Mutualism

Answer 11

Both organisms benefit

(++)

Question 12

Parasitism

Answer 12

One organism lives inside another and harms it

+-

Question 13

Autotroph

Answer 13

First level producers – raw materials, CO2, H2O

Question 14

Heterotroph

Answer 14

Second level and higher consumers

Question 15

Herbivore

Answer 15

Eats plants

Question 16

Carnivore

Answer 16

Eats animals and consumes remains of animals

Question 17

Omnivore

Answer 17

Eats both plants and animals

Question 18

Scavenger

Answer 18

Do not kill food; eat animals that are already dead

Question 19

Decomposer

Answer 19

Breaks down dead and decaying organic materials

Ex:bacteria or fungi also recycling

Question 20

Trophic level

Answer 20

Each step in a food chain or food web

Question 21

Food chain

Answer 21

A model showing how organisms transfer energy through the ecosystem – one path to show movement of energy. Ex: berries -> mice -> Black bear

Question 22

Food web

Answer 22

Links all food chains together in an ecosystem

Question 23

Ecology

Answer 23

The study of interactions between living organisms, and their nonliving environment