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Flashcards in Bio: Deck (23)
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1

Name the Metric system terms in order from smallest to largest

Kilo
Hecto
Deka
Meter
Deci
Centi
Milli

2

Ecology

The study of how living things interact with each other + environment

3

abiotic Factors

referring to a physical of nonliving component of an ecosystem

4

biotic factors

relating to a living component of an ecosystem

5

niche

The role of a species in its ecosystem
1. Food it eats
2. ho the food is obtained

6

habitat

Type of place where an organism lives

7

competitive exclusion principle

The principle that when the population of 2 species compete for the same limited resource at the same time, one population will use the resource more efficiently leading to local extinction of the other species.

8

photoautotrophes

An organism that derives energy from light + forms its own organic compounds from abiotic carbon sources

9

chemoautotrophs

Use energy from chemical compounds to make food by chemosynthesis.

10

herbivores

a plant eating consumer: one of the class of consumers most closely associated with producers.

11

carnivores

Any organism that consumes animal; a meat eater

12

omnivores

capable of eating both plant and animal material

13

decomposers

An organism that lives on decaying organic material from which it obtains energy and nutrients

14

Scavengers

organisms that eat dead organisms

15

detritivores

organic waste eaters

16

detritus

organic waste
ie: dead leaves, animal feces and other organic debris that collects on the soil of bottom of a body of water.

17

saprotrophs

the final stop in decomposition. They feed on any remaing organic matter that is left over after other decomposers do their work. This includes fungi and single celled protozoa. but Fungi are the only organisms that can deompose wood

18

what is the only organism that can decompose woord

Fungi

19

Food Chains

represents a single pathway throught which energy and matter flow through an ecosystem.

20

Food web

represents a multiple pathways through which energy and matter flwo through an ecosystem.

21

Trophic Levels

the feeding positions in a food chain or web. all food chains and webs have at .least two or three trophic levels

22

Whats the maximum amout of trophic levels there can be in a food web

4

23

Biomass

the total mass of organisms at a trophic level.