Energy Flow (AP BIO)

A biological community is made up of many populations of ___ species.

Tags

NGSS.MS-LS2-2

Communities can be found in a range of sizes but are all described by their species___ and diversity.

Tags

NGSS.MS-LS2-5

___ refers to the various species found within a community.

Tags

NGSS.MS-LS2-5

The fundamental ___ comprises all the abiotic conditions under which a species could survive when adverse biotic conditions are absent.

Place the following methods of obtaining nutrients and examples of the types of organisms that use them into the correct category.

Groups:

(a) Autotrophs

,

(b) Heterotrophs

,

(c) Chemoautotrophs

• use sunlight for energy

• use inorganic compounds as energy sources
• consumers

• include animals, fungi, and some bacteria

• play a crucial role in ecosystems

• rely on autotrophs for energy

• producers

• convert inorganic substances into organic matter

• play a vital role in food chains

• obtain energy from chemical reactions
• found in extreme environments
• include certain bacteria and archaea
• include plants and some bacteria

• cannot produce their own food

• carry out photosynthesis

• play a role in nutrient cycling
• obtain energy by consuming other organisms

• do not require sunlight for energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Energy flow and chemical cycling:

Correctly label the following parts of the image depicting chemical cycling and energy flow in an ecosystem.

d

f

g

h

i

consumers

chemical energy

decomposers

producers

inorganic nutrient pool

fermentation

cellular respiration

photosynthesis

solar energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Food chains vs food webs

Classify the following as characteristic of a food web, energy pyramid, or a food chain.

Groups:

(a) Food web

,

(b) Food Chain

,

(c) Energy Pyramid

• Role of decomposers in nutrient cycling

• Can be represented as a simple diagram

• Complex relationships among various organisms

• Linear sequence of organisms where each is eaten by the next

• Typically starts with a primary producer

• Distribution of energy in an ecosystem

• Predator-prey dynamics in an ecosystem

• Interconnecting paths of energy flow demonstrated through feeding relationships

• Energy transfer between different trophic levels

• Multiple species interacting within an ecosystem

• Examples include grass -> rabbit -> fox

• Illustrates direct feeding relationships

• Helps in understanding energy flow in ecosystems

• Effects of environmental changes on food webs

• Impact of keystone species on community structure

• Shows how energy is transferred from one organism to another

• Each level represents a different trophic level

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Water cycle -

Label the figure with the steps in the water cycle.

a

b

c

d

e

nitrogen fixation

evaporation

evaporation & transpiration

runoff

artesian 

precipitation over oceans

sublimation

condensation

precipitation

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

As nitrogen cycles through an ecosystem, it must first be ___, or converted to ammonium.

Tags

NGSS.MS-LS2-3

The weathering of rocks provides ___, which cycles locally in both terrestrial and aquatic biomes.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3