Presentation on theme: "Interdependence Among living Organisms and the environment ecosystem populationcommunities Interaction Between Living organisms Predator- prey Biological."— Presentation transcript:
Interdependence Among living Organisms and the environment ecosystem populationcommunities Interaction Between Living organisms Predator- prey Biological control Lion and deer symbiosis commensalism Tree and fern parasitism A tree and A mistletoe mutualism Hermit crab And sea anemone competition Food chain Food web Human activities Agriculture industry Pyramid Of numbers Feeding Relationships And the flow Of energy photosynthesis Carbon dioxide Light Water chlorophyll
Prey - Predator Predator: A living organism that hunts other living organism for food Prey: A living organism that is hunted by predators Example: Cat (predator) eats mouse (prey) Example 2: Lion (predator) eats deer(prey)
Commensalism Meaning: is an interaction between two different organisms where only one organisms benefits from the relationship. The other organisms is neither helped nor harmed. The organisms which benefits in commensalism is called the commensal. The organisms which is not affectedis called the host. Example: Sea anemone (the host) uses poisonous to protect the clown fish(the commensal) from its predators. The sea anemone is neither helped nor harmed by the clown fish Example: The remora fish(the commensal) feeds on food scattered by the shark(the host). The shark neither helped nor harmed by the clown fish
Sea anemone with clown fish Remora fish with shark commensalism
Mutualism Meaning: An interaction that benefits both organism Example: Sea anemone obtains food and transport from the hermit crab whereas hermit crab is protected from its predators by the poisonous tentacles of the sea anemone Example 2: The fungus and the green algae live together in a lichen. The fungus provides water, protection and nutrients to the algae whereas the algae provides the fungus with food produced during photosynthesis
Sea anemone with hermit crab lichen on Corylus mutualism Mynah and buffalo
Parasitism Meaning: An interaction in which one organism (the parasite) benefits but the others organism(the host) is harmed Example: The tapeworm(the parasite) in the human’s intestine(the host) feeds on nutrients in the human’s blood whereas the human may suffer from abdominal pain, bloatin and diarrhoea Example 2: Ticks and lice (parasite) live on the on the skin of mammals (hosts) and suck their blood.
The tapeworm in the small intestine The ticks parasitism
Competition Meaning: Competition takes place when organisms living in the same habitat compete to obtain common need such as shelter, water, mate, minerals,food or light Intra-specific competition is the competition between organisms of the same species, such as wolves compete for meat. Competition become stronger when the common needs in ecosystem are limited Inter-specific competition is the competition between organisms of different species, such as crows and wolves compete for meats
Biological control has many advantages as compared to using pesticides. Some of them are 1.does not pollute the environment 2.does not kill other pests because natural enemies are used is cheap and safe to use
PMR 05 – Smoking is dangerous to human health. PMR 06 – suggest one way in which egg could be to float PMR 07 – apakah kegunaan ubat gigi PMR 08 – nak tentukan ketulinan air PMR 09 – mengapa ikan gapi diletakkan didalam longkang PMR 2010 – mengapa ikan paus perlu kerap timbul dipermukaan air
Producers, Consumers and Decomposers Producers are all green plants that make food through photosynthesis. Consumers are animals that eat plants or other animals. Decomposers are organisms that decompose dead organisms (animals or plants) and change them into simple substances. Examples of decomposers are bacteria and fungi.
A pyramid of numbers shows the number of organism at each link of the food chain. From the base of the pyramid to the top ◦ the number of organisms decrease ◦ the size of the organisms increase ◦ more energy is lost
The term photosynthesis comes from two root words photo, which means “light”, and synthesis, which means putting together. Photosynthesis is the process in which green plants use light to produce food. Green plants manufacture glucose from water and carbon dioxide in the presence of sunlight in their chlorophyll. Oxygen is released in the process. The glucose is stored as starch in the plants.