Symbiotic Relationships
Which relationship is when two organisms benefit (+/+)?
Mutualism
What is an organism?
A living thing.
Food chains and food webs show the pathway of ________________ in an ecosystem.
energy
Name 2 decomposers.
mushroom
earthworm
bacteria
mold
Which relationship is it when one organism benefits (+) and the other is harmed (-)?
Parasitism
What do you call a group of the same species that live in the same place?
Population
Describe how a food chain is different from a food web.
a food chain shows one energy pathway while a food web shows multiple.
1. What is an herbivore?
2. Give an example of one.
1. An organism that only eats plants.
2. Rabbits, cows, etc.
Describe an example of commensalism.
Answers may vary- including how one organism benefits and the other is not affected.
Order the levels of organization in an ecosystem from smallest to largest.
individual, population, community, ecosystem
Look at the food chain.
Saguaro Cactus --> Wood Rat ---> Diamondback Rattlesnake ---> Red-Tailed Hawk ---> Red Mushroom
Label the producer, type of consumer, and decomposer.
Saguaro Cactus (Producer)--> Wood Rat (Primary Consumer) ---> Diamondback Rattlesnake (Secondary Consumer) ---> Red-Tailed Hawk (Tertiary Consumer) ---> Red Mushroom (Decomposer)
2. Give an example of one?
1. Eats both plants and meat.
2. Humans, pigs, dogs, etc.
Explain how commensalism is different from parasitism.
Commensalism is when one organism is unaffected, and the other benefits. In parasitism, one benefits, but the other is harmed.
In the rainforest, countless species exist from the sloth to the banana plant. All of these species rely on energy from the sun to be turned into chemical energy that organisms can use. What level of organization are all of the different species in the rainforest?
Community
(All living things)
Create a food chain that is 5 organisms long that I would find in Wisconsin.
Answers vary.
Producers are essential because they bring energy into the ecosystem through photosynthesis.
1. What three things are needed for photosynthesis?
2. What two things are made?
1. sunlight, water, carbon dioxide
2. oxygen and sugar
Explain what type of relationships the clownfish and sea anemone has AND how each organism is affected.
Mutualism.
Sea Anemone- Predators of the clownfish are attracted, so they get food.
Clownfish- A home to live in.
In the tundra, sunlight can be scarce. However, many plants such as arctic moss and cotton grass rely on this sunlight for photosynthesis. In turn, the animals living in the tundra depend on the plants. What level of organization is being described here?
Ecosystem
In the ocean, seaweed relies on sunlight to photosynthesize. That energy is turned into chemical energy that the crab gets from the seaweed. That energy stored in the crab then goes to the turtle. Finally, when all these organisms die out, the marine worms break down their dead matter for energy. Make a food chain from this pathway.
seaweed --> crab ---> turtle ---> marine worms
Describe why decomposers are needed in an ecosystem. Include energy, nutrients, and cycle in your answer.
Answers Vary.