today’s learning target #4 i can show relationships of organisms through food chains, webs, and...
TRANSCRIPT
TODAY’S LEARNING TARGET
#4 I can show relationships of organisms through food chains, webs, and trophic levels.
(you will be writing this down tomorrow)
CH 15 NOTES #3
FOOD WEBS AND TROPHIC LEVELS
VOCABULARY:
HERBIVORE –eat only plants
EX: rabbit, cow, deer, horse
CARNIVORE –eat only animals
EX: lion, spiders, bobcat
OMNIVORE –eat both plants and animals
EX: birds, humans
SCAVENGER – organisms that eat dead animals EX: vultures, crayfish, rats, raccoons
DECOMPOSERS – break down dead plants and animals
EX: bacteria, fungi, worms
IMPORTANCE * they return nutrients of
dead organism back to the soil - plants use this to grow
( cycle)
FOOD CHAIN – order that one organism feeds on another
FOOD WEB – a network of interacting food chains
because organisms eat more than one kind of food!
FOOD CHAIN FOOD WEB
What do you notice starts all food chains?
TROPHIC LEVELS – levels of feeding in an ecosystem
1. PRODUCERS – plants (autotrophs –make own food)
2. PRIMARY CONSUMER –animal that eats plants
3. SECONDARY CONSUMER – animal that eats a primary
4. TERTIARY CONSUMER – animal that eats a secondary
TROPHIC LEVELS LESS ORGANISMS AS YOU GO UP SO THEY HAVE ENOUGH FOOD!
ECOLOGICAL PYRAMIDS
ENERGY PYRAMID – shows amount of energy passed to each trophic level
some energy from food eaten is used for muscles, breathing, digesting, etc.
Energy in their body that can be passed on is
only 10%
Add the arrow and “less energy” on your notes
TERTIARY CONS.
SECONDARY CONS.
PRIMARY CONS.
PRODUCERS (plants)
LESS ENERGY AVAILABLE AS YOU GO UP
SHOW your teacher your notes to get signed.
Then keep them in your folder