Food Chains and Food Webs

Guided Notes

Energy Roles of Organisms in an Ecosystem

___________________ is an organism that can make its own food.

Examples include ________________, _______________, and _______________.

Producer

grasses trees other plants

____________________ are the source of all energy in an ecosystem.

________________ are producers that capture energy from the ________________ and turn it into ___________ in the form of ______________________.

Producers

Plants sun

food sugar and starches

________________________ is the process that organisms go through to produce energy by using _______________ and __________________ to produce molecules such as ______________ and __________________, along with _______________.

Photosynthesis

Carbon dioxide water

sugar starches

oxygen

_________________________ are organisms the obtain energy by feeding on other organisms.

Consumers

Type of Consumer Type of Food

Herbivore Only plants

Carnivore Only animals

Omnivore Both plants and animals

Scavenger Dead organisms

Types Of Consumers

______________________ - Organisms that break down ___________ material and dead _________________ and return the raw materials to the environment.

Examples of Decomposers :

__________________________________

Decomposers waste

organisms

Bacteria, and fungi

_____________ - Series of events in which one organism eats another to obtain energy.

Example:

1. Producer

2. ______________________________ (eats producer)

3. ______________________________ (eats consumer)

Food Chain

First-level or primary consumer Second-level or secondary consumer

______________________ - Consists of many ________________ food chains in an ecosystem.

Food web overlapping

_______________________- Shows the amount of energy that moves from one feeding level to another in a food web.

A. Only _______________ of the energy at one level of a food web is transferred to the next level.

B. _______________ of the energy is used for the organism’s life processes or is lost as heat to the environment.

Energy Pyramid

10 %

90 %