unit 5, lesson 5.2- biotic and abiotic components
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Biotic and Abiotic ComponentsUNIT FIVE, LESSON 5.2BY MARGIELENE D. JUDAN
LESSON OUTLINEBiotic ComponentsAutotrophsHeterotrophs1. Consumers2. DecomposersAbiotic ComponentsConserving Wildlife
Components of the EcosystemBiotic Components – living thingsAbiotic Components – non-living things
SUMMARY FLOWCHART (Copy!)Ecosystem
Biotic Abiotic
Autotrophs Heterotrophs
Photosynthetic
Chemosynthetic
Consumer Decomposer
Herbivores Carnivores Omnivores
ScavengersDetritivoresSaprotrophs
SoilSunlightWater
AirTemperature
Inorganic Nutrientsetc.
BIOTIC COMPONENTSComposed of:Autotrophs – produce their own food by photosynthesis or chemosynthesis (ex. plants, phytoplankton) Heterotrophs – feed on autotrophs for food; cannot produce their own food (ex. animals)
Autotrophsproduce their own food by photosynthesis or chemosynthesisCan be classified as:1. Photosynthetic – use sunlight to
make food (glucose)2. Chemosynthetic – use inorganic
substances to make food
HeterotrophsFeed on autotrophs for food; cannot produce their own foodCan be a consumer or decomposer
Heterotrophs: ConsumersThey feed from producers or other organismsAll animals and fungi are heterotrophs.Can be classified as:1. Herbivores – eat only plants (producers)2. Carnivores – eat only animals (herbivores, omnivores,
carnivores)3. Omnivores – eat both plants and animals (producers, herbivores,
omnivores, carnivores)
Heterotrophs: DecomposersThey feed by eating dead organisms.Speed up decomposition and return the nutrients to the soilCan be classified as:1. Scavengers – primary source of food are the dead bodies of animals
(ex. vultures, hyenas)2. Detritivores – usu. eat decaying bodies (ex. beetles, ants, earthworms)3. Saprotrophs – absorb nutrients from decaying bodies (ex. fungi,
mushrooms)
ABIOTIC COMPONENTSNon-living factors that living things need to surviveExamples:SoilSunlightWaterAirTemperatureInorganic Nutrients
CONSERVING WILDLIFEWe need other living things in order to survive because we are all interrelated with each other.
Some Activities That Harm WildlifeHunting and fishingUse of pesticides and herbicidesDeforestationKainginCutting treesBurning trashes
Assignment (1 whole sheet) Lab 2.2Answer “Check Your Understanding”, p. 183. # 1 only.Minimum of 3 paragraphs. (minimum of 3 sentences per paragraph)First paragraph – introduction (brief overview)Body – contains the details arranged logicallyLast paragraph – conclusion (summary and recommendations)Rubric (15 pts) next slide
CRITERIA 4 3 2 1Description (D)
Description is complete and clear
Description is incomplete but clear
Description is incomplete and unclear
Very short or no description
Presentation (P)
Presentation shows originality and creativity.
Presentation shows some originality and creativity.
Shows some attempt of originality and creativity
Presentation is patterned to other person’s idea
Organization of ideas (O)
Information is clear and logical
Most information is clear and logical
Some information are clear and logical
Information is unclear and illogical
Mechanics (M)
Minimum mistakes in grammar and spelling
Some mistakes in grammar and spelling
Mostly incorrect grammar and spelling
Sources:Science Links 7