Transcript Autotrophs & heterotrophs

Objective: Understand the Main Concepts in Ecology
Key Words: Ecology, Biotic, Abiotic Factors, Ecosystem
• Do now: What do you learned about
• Biotic and abiotic factors
• Population
• Community
• Ecosystem
• Biosphere
• Autotrophs
• Producers
• Heterotrophs
• Consumers
Objective: Understand Trophic Relationship among Organisms
Key Words: Autotrophs, Producers, Heterotrophs, Consumers.
What are Autotrophic and Heterotrophic nutrition?
Autotrophs or producers
• Plants and other organisms that make their own food from inorganic substances
• Auto = itself + trophs = to eat
• Examples: plants (trees, bushes, ferns, etc.) and some bacteria
Tree
Bush
algae
Fern
Bacteria
Objective: Understand Trophic Relationship among Organisms
Key Words: Autotrophs, Producers, Heterotrophs, Consumers.
What are Autotrophic and Heterotrophic nutrition?
Heterotrophs or consumers
• Organisms that cannot make their own food and must obtain it ready-made.
• Hetero = others + trophs = to eat
• Example: animals, fungi, protozoa or protist, some bacteria
Swan
Fungi
Protozoa
or
Protist
Bacteria
Objective: Understand Trophic Relationship among Organisms
Key Words: Autotrophs, Producers, Heterotrophs, Consumers.
What are Autotrophic and Heterotrophic nutrition?
2. Arrange the following items in the table as abiotic factors, biotic factors,
producers or autotrophs, heterotrophs or consumers.
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Bass (fish)
Bush
Rocks
Flowers
Grass
Grasshoppers
Hawks
Humans
Mountain lion
Water
Raccoon
Sunlight
Swan
Tree
Soil
Abiotic factors
Rocks
Water
Sunlight
Soil
Biotic factors
Autotrophs
Or producers
Heterotrophs
Or consumers
Bush
Flowers
Grass
Tree
Bass
Grasshoppers
Hawks
Humans
Mountain lion
Raccoon
Swan
Objective: Understand Trophic Relationship among Organisms
Key Words: Primary Consumers, Herbivores.
What are Primary Consumers or Herbivores?
• An organism that eats only producers
• Examples: Grasshoppers, cows, deer, and rabbits.
Grasshopper
Deer
Objective: Understand Trophic Relationship among Organisms
Key Words: Secondary Consumers, Carnivores.
What are Secondary Consumers or Carnivores?
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Heterotrophs that eat other animals
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Examples: Snakes, frogs, raccoons, hawks.
Raccon
Hawk
Frog
Objective: Understand Trophic Relationship among Organisms
Key Words: High-level consumers
What are High-level Consumers?
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Heterotrophs that eat secondary consumers
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Examples: eagles, sharks, lions, owls, snakes, lizards.
Bald eagle
Lizard
Mountain lion
Owl
Objective: Understand Trophic Relationship among Organisms
Key Words: Decomposers
What are Decomposers?
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Organism that consumes dead organisms and organic wastes.
They break down organic molecules into inorganic molecules (water,
minerals, …)
They RECYCLE dead organisms.
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Examples: bacteria, fungi
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Bacteria
Fungi
Objective: Understand Trophic Relationship among Organisms
Key Words: Abiotic, biotic factors, heterotrophs, autotrophs
Organize the words from the Word Bank in a conceptual map.
Give an example of each term.
Word Bank
Ecosystem
High Level Consumers
Consumers
Biotic Factors
Producers
Decomposers
Primary consumers
Autotrophs
Carnivores
Biotic Factors
Biotic
factors
Animals
Abiotic factors
Ex: Water, Rocks
Plants
Ex: Plants, animals
Heterotrophs
Consumers
EX: Animals, fungi
Primary Consumer
Herbivores
Ex: Cow, Zebra
Secondary
Consumers
Carnivores
Ex: Frog, Cat
Autotrophs
Producers
Plants
High Level Consumers
Ex: Eagle, Lion
Decomposers
Ex: Fungi,
bacteria
Objective: Understand Trophic Relationship among Organisms
Key Words: Abiotic, biotic factors, heterotrophs, autotrophs
3. Check off the list of items below to the category or group they belong to.
Organism
Tiger
Chicken
Corn
Eagle
Owl
Wheat
Bacteria
Fungi
Abiotic
factor
Biotic
Factor
Producer
Primary
consumer
Secondary
consumer
High level
consumer
Decomposer
Objective: Understand Trophic Relationship among Organisms
Key Words: Abiotic, biotic factors, heterotrophs, autotrophs
4. Read the following paragraphs describing a specific ecosystem.
Find the biotic and abiotic factors, and the different populations and
communities that form that ecosystem. Classify living things as producers,
consumers, primary consumers, secondary consumers, high level
consumers and decomposers.
• A grassland is a grassy, windy, partly-dry biome, a sea of grass. Almost one-fourth
of the Earth's land area is grassland. Deep-rooted grasses dominate the flora in a
grassland; there are very few trees and shrubs in a grassland, less than one tree per
acre.
• There are many different words for grassland environments around the world,
including savannas, pampas, campos, plains, steppes, prairies and veldts.
• The climate is temperate and tropical, with a rainfall average from 25 to 75 cms a
year.
• The natural vegetation of the grasslands includes many species of grasses and wild
flowers. In areas near rivers, the vegetation may dense and include various shrubs.
• Animals of the grasslands include: coyotes, squirrels, antelope, grasshopper, bison,
owls, birds,… In Africa, the grasslands are populated by zebras, giraffes, gazelles,
lions,…
Objective: Understand Trophic Relationship among Organisms
Key Words: Abiotic, biotic factors, heterotrophs, autotrophs
Savannah Ecosystem
Objective: Understand Trophic Relationship among Organisms
Key Words: Abiotic, biotic factors, heterotrophs, autotrophs
Ecosystem
grassland
Communities
savannas, pampas,
campos, plains, steppes,
prairies and veldts
flora
vegetation
animals
ABIOTIC
FACTORS
temperature
rainfall
Grasses, wild flowers coyotes,
squirrels, antelope,
grasshopper, bison, owls, birds,
zebras, giraffes, gazelles, lions
BIOTIC FACTORS
Producers
Climate
Wind
Populations
Trees
Grass
flowers
Shrubs
Consumer
Primary consumers
bison zebras
birds squirrels
antelope
grasshopper
giraffes
gazelles
Secondary
consumers
owls
coyotes
Birds
lions
Decomposers
High Level
consumers
coyotes
lions
owls
Bacteria
mushrooms