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