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Species Relationships Feeding relationships Autotrophs Vs. Heterotrophs Autotrophs are things that make their own food – Examples- plants Heterotrophs.

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Presentation on theme: "Species Relationships Feeding relationships Autotrophs Vs. Heterotrophs Autotrophs are things that make their own food – Examples- plants Heterotrophs."— Presentation transcript:

1 Species Relationships Feeding relationships Autotrophs Vs. Heterotrophs Autotrophs are things that make their own food – Examples- plants Heterotrophs eat others** for food – Examples- monkeys & humans "I MUST BE A HETEROTROPH I CAN'T MAKE THESE !!"

2 Carnivores and Scavengers Heterotrophs which eat other heterotrophs – Carnivore= meat eaters – Examples= lion Some animals do not kill their own food they are called scavengers – They play a beneficial role in ecosystem. – Clean up dead animals Examples= turkey vulture

3 Herbivores Herbivores eat plants

4 Omnivores & Decomposers Omnivores- eat both Examples= humans & bears Fungus is an example of decomposer. Decomposers break down and absorb nutrients from dead organisms.

5 Detritivores Detritivores eat “garbage” of ecosystem – organisms that have recently dies, fallen leaves and branches, animal wastes (vulture, bacteria and fungi - decomposers)

6 Relationships for survival Symbiosis – “living together” – Relationship in which there is a close and permanent association between organisms of a different species Commensalism The predator-prey relationship Mutualism Parasitism

7 Commensalism One species benefits and the other is neither helped nor harmed – Barnacles on a whale Do not harm or help whale Barnacles benefit because constant moving water source

8 Predators vs prey One organisms hunts another for food – Predators- hunt for food – Prey- organism that predator eats – Predators can be the prey of larger animals Population sizes are linked – If # of prey grows or shrinks # of supported predators does the same

9 Predator- Prey Hunter Lions Insect eating birds Benefit from relationship Hunted Zebra Insects Die from relationship

10 Predator & prey When the # of prey increases the # of predators will increase too because there is more food to support them. The changing population size of the prey species controls the population size of the predator species – Creates a cycle The larger the animal the larger the life cycle vs smaller animals – Live longer – Reproduce slower

11 Predator vs prey Fox hunts can kills rabbit

12 Mutualism A symbiotic relationship in which both species benefit – Ants and acacia tree – Flowers and insects – Lichen – Example: pollination – bees, butterflies, bats, and birds carry pollen to other plants

13 Mutualism Lichens An alga and a fungus – depend on each other and cannot live independently. Through photosynthesis, the alga produces the food the lichen requires, while the fungus absorbs vital nutrients and water for the lichen.

14 Parasitism When one organism harms another – A symbiotic relationship in which one organism derives benefit at the expense of other. – Example Parasite and host… – How come parasites only harm not kill host?

15 Parasite vs Host Feeds on host Live on body of host Depends on host for life processes Thrive in crowded areas Are a density-dependent limiting factor Is feed on Larger the host the more parasites it can support May become ill or die from parasite

16 Parasites Sheep Tick Carnivorous, feeding on the blood of various species of birds, reptiles, and mammals, including human beings.

17 Summary of symbiotic relationships RelationshipDescriptionHarmful vs helpful Example Predator & preyOne animal eats another One is helped one is killed Cat eating a mouse ParasitismOne animals feeds off another One is helped one is drained of resources or killed Tick living off a deer CommensalismOne species benefits from another One is helped one is not phased Barnacles and a whale MutualismBoth rely on each other Both are helpedFlower and insect

18 Competition Results from niche overlap (use of the same limited resource by two or more species) – Some animals will fight to the death for their resources – Some plants species release toxins into the soil that prevent other species from growing nearby, restricting the space of the other species


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