Question 1

Autotroph

Accepted Answer

An organism that is able to produce it's own food by capturing sunlight

Question 2

Primary Producer

Accepted Answer

Another term for autotroph

Question 3

Photosynthesis

Accepted Answer

Process used by autotrophs to capture sunlight to make sugar

Question 4

Phytoplankton

Accepted Answer

Photosynthetic algae found in the ocean photic zone

Question 5

Chemosynthesis

Accepted Answer

Process by which some autotrophs use chemical energy to make sugar

Question 6

Heterotroph

Accepted Answer

An organism that obtains energy by eating other living things

Question 7

Consumer

Accepted Answer

Another term for heterotroph

Question 8

Detritus

Accepted Answer

Any dead or decaying material

Question 9

Food Chain

Accepted Answer

Feeding relationship in an ecosystem and show the flow of energy

Question 10

Food Web

Accepted Answer

A group of interconnected food chains

Question 11

Trophic level

Accepted Answer

Each step in a food chain or food web

Question 12

Ecological pyramid

Accepted Answer

Metal showing the amounts of energy or mass contained in each trophic level in a food chain or web

Question 13

Biomass

Accepted Answer

The total amount of living tissue in a trophic level

Question 14

Biogeochemical Cycle

Accepted Answer

process by which materials are cycled between biotic and abiotic parts of the biosphere

Question 15

Nutrient

Accepted Answer

Chemical substance that an organism needs to sustain life

Question 16

Nitrogen Fixation

Accepted Answer

The process of converting nitrogen gas into organic nitrogen for use by plants

Question 17

Denitrification

Accepted Answer

Process by which bacteria convert nitrates into nitrogen gas

Question 18

Cellular Respiration

Accepted Answer

The conversion of sugar into energy and carbon dioxide gas

Question 19

Limiting Nutrient

Accepted Answer

Single essential nutrient that limits productivity in an ecosystem.

Chapter 4 Biology