DC BIO FINAL- Unit 1: Ecology

Question 1

Ecosystem

Answer 1

Comprises all biotic and abiotic components in a particular area

Question 2

Biotic and Abiotic Fators

Answer 2

B: Living things (Plants, animals, fungi)
A: Nonliving things (Air, water, soil, climate)

Question 3

Biome

Answer 3

Large-scale communities of organisms mostly defined on land by the dominant plant types that exist in geographic regions with similar climate conditions

Question 4

Food chain

Answer 4

Linear sequence of organisms which nutrients and energy pass as one organism eats another

Question 5

Trophic Level

Answer 5

Organism position in food web or chain

Question 6

Producers

Answer 6

Base or foundation of the food chain (Plants & phytoplankton)

Question 7

Primary Consumers

Answer 7

Herbivores- organisms that consume the producers

Question 8

Secondary Consumers

Answer 8

Carnivores that eat the primary consumers

Question 9

Tertiary Consumers

Answer 9

Carnivores that eat other carnivores.
Apex consumers: Top of food chain

Question 10

Energy Pyramids

Answer 10

Graphical representation of different trophic levels in an ecosystem based on energy content

Question 11

10% Rule

Answer 11

Only 10% of energy from one trophic level makes it to the next trophic level. Due to not every org being eaten and energy used by org at that level

Question 12

Food Web

Answer 12

The concept that accounts for multiple trophic interactions between each species and many species it may feed on or that feed on it

Question 13

Grazing vs. Detrital Food Webs

Answer 13

Grazing: Has plants or photosynthetic organisms at the base
Detrital: Base of organisms that feed on decaying organic matter including decomposers

Question 14

Autotrophs

Answer 14

Harness light or chemical energy

Question 15

Photoautotrophs

Answer 15

Use sunlight as energy source to photosynthesize includes bacteria, algae, and plants

Question 16

Chemoautotrophs

Answer 16

Use inorganic molecules as an energy source are found where sunlight isn’t available

Question 17

Heterotrophs

Answer 17

Get energy through the consumption and digestion of other living or previously living organisms

Question 18

Biomagnification

Answer 18

Increasing concentration of persistent, toxic substances in organisms at each successive trophic level