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2020 - 6th Grade Flashcards > Ecosystems > Flashcards

Flashcards in Ecosystems Deck (25)
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1

What do we call the different energy levels of the ecosystem?

Tropic levels

2

What are the two main types of organism in an ecosystem?

Producers and consumers

3

What is the primary source of energy in all ecosystems?

The Sun

4

Define "producer"

An organism that can make its own energy from the Sun and its environment

5

Define "consumer"

An organism that can't make its own energy and has to get it from eating other organisms

6

What are the four types of consumers?

herbivore, carnivore, omnivore, and detritivores/scavengers

7

What type of consumer only eats other consumers?

carnivores

8

What type of consumer eats both other consumers and producers?

omnivores

9

What type of consumer eats/breaks down dead animal and plant matter?

detritivores/scavengers

10

What is photosynthesis?

the process that producers use to convert sunlight into energy

11

What is cellular respiration?

The process that consumers use to turn food into energy?

12

How are photosynthesis and cellular respiration connected?

They're the same process, just in the opposite order

13

What are the three main organizational charts we use to study an ecosystem?

Food chains, food webs, and pyramids

14

Which is more accurate and precise: food chains or food webs?

Food webs. Food chains don't show the complicated relationships that exist in real ecosystems

15

What are three types of ecological pyramid?

Energy pyramids, biomass pyramids, and number pyramids

16

What is the purpose of the carbon cycle?

To reuse carbon found in gases and in living things, since carbon is an essential building block of living organisms

17

What are the three cycles responsible for balancing the chemical and nutrient ratios on Earth?

The carbon, nitrogen, and phosphorus cycles

18

What are the different danger levels we use to rank the reduction an organism population?

Vulnerable, Threatened, Extirpated, Endangered, Extinct

19

What is a keystone species?

A species that causes critical damage if it is removed from its ecosystem

20

What is biodiversity?

The variety of different populations of organisms in an ecosystem

21

What is primary succession?

The conversion of a lifeless environment, like bare sand and rock, into a thriving ecosystem over time

22

What is secondary succession?

The regrowth and replacements of populations in an ecosystem after it gets damaged

23

What is a pioneer species?

the first organisms to move into a lifeless environment and begin primary succession (usually microbes or lichens).

24

What is a climax community?

the "final" stage of succession

25

A forest fire would trigger what type of succession?

secondary; the fire won't destroy the soil, so it is secondary, not primary succession