interaction of living things
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Interaction in the Ecosystem
Review: Classify the organisms according to the kingdom where they belong:
Kingdom Plantae
Kingdom Monera
Kingdom Fungi
Kingdom Protista
Kingdom Animalia
Objectives:• Describe how living things interact with
each other;• Make a chart that shows the
relationship among living things;• Realize the importance of maintaining
harmonious relationship with each other.
“And so we know and rely on the love God has for us. God is love. Whoever lives in love lives in God, and God in him.”
1 John 4:16
Having a good and harmonious relationship is important to maintain peace and order in the society.
Relationship among Living Things• Predation• Competition• Cooperation• Symbiosis
a. Mutualismb. Parasitismc. Commensalism
Predation• A stronger organism called the predator eats the weaker
organism called the prey.
PredatorPrey
Predator Prey
Competition• Some living things have the same need that is
why they used to fight each other.
Intraspecific Competition- involves organisms of the same kind/species.
Interspecific Competition- involves organisms among different species. (competition in a community)
Lioness and hyenas fighting for food
Cooperation• Some organisms help one another for higher
chance of survival.
Ants are helping one another to protect and sustain their colony.
Symbiosis• An interaction that involves two
different kinds of organism, where one is benefited while the other may be benefited, harmed or unaffected.• Examples are mutualism, parasitism
and commensalism.
MutualismThe two organisms are benefited.
Butterfly drinks nectar from flowers.Butterfly helps
the flowers in pollination.
Ants protect aphids from predator
Aphids give food to ants.
Ants and Aphids
Parasitism
• One organism is benefited (parasite) , the other is harmed (host).
Man is the host.
Leech is the parasite.
Parasitism
Ectoparasitism- parasites are found outside the host’s
body
Endoparasitism- parasites are found
inside the host’s body
Commensalism
One organism is benefited (commensal) while the other is not affected (host).
Shark is the host.
Remora is the commensal.
Commensalism
Tree is the host.
Orchid is the commensal.
Organism A Organism BMutualism Benefited BenefitedParasitism Benefited
(Parasite)Harmed(Host)
Commensalism Benefited(Commensal)
Not Affected (Host)
Mutualism
Commensalism
Parasitism
Competition
Predation
Cooperation
Predation
Parasitism
Mutualism
Cooperation
Assignment
• Bring a full-body picture of yourself, an experiment paper and pencil