Copy this chart onto a sheet of paper.EXAMPLE

Organism 1+, -, 0Why?

Organism 2+, -, 0Why?

Symbiosis Type

1

2

3

4

5

6

7

8

SYMBIOSISAn ecological relationship between 2 or more species

4 main types of symbiosis

1. Predation2. Parasitism3. Commensalism4. Mutualism

Predation A predator (hunter) attacks its prey Prey usually dies

Parasitism(+ -)

One organism benefits (+); one organism is harmed(-) The parasite usually wants to keep the host alive because the

host is the food source.

Commensalism(+, 0)

One organism benefits (+); one organism is unaffected (0)

Mutualism(+ +)

Both organisms benefit (+ +)

Identify the organisms and how they are affected

How to attack these questions…

Let’s do one example together In Central America there is a tree called

bullhorn acacia (Acacia cornigera) that provides both food and shelter to a certain species of ant (Pseudomyrmex ferruginea). The ants live within the tree without causing it harm. In fact, the ants protect the tree by vigorously attacking and stinging other animals that try to eat it.

First thing…

Identify the two organisms involved

Identify the two organisms involved. In Central America there is a tree called

bullhorn acacia (Acacia cornigera) that provides both food and shelter to a certain species of ant (Pseudomyrmex ferruginea). The ants live within the tree without causing it harm. In fact, the ants protect the tree by vigorously attacking and stinging other animals that try to eat it.

Organism 1

Organism 2

Next thing…

Identify how each organism is affected

How is each organism affected? In Central America there is a tree called

bullhorn acacia (Acacia cornigera) that provides both food and shelter to a certain species of ant (Pseudomyrmex ferruginea). The ants live within the tree without causing it harm. In fact, the ants protect the tree by vigorously attacking and stinging other animals that try to eat it.

Tree gets protection (+)

Ants get food and shelter (+)

Now determine the type of symbiosis!

Predator: hunter and prey Parasitism: (+ -) Commensalism: (+ 0) Mutualism: (+ +)

This is MUTUALISM!!!! (++)

In Central America there is a tree called bullhorn acacia (Acacia cornigera) that provides both food and shelter to a certain species of ant (Pseudomyrmex ferruginea). The ants live within the tree without causing it harm. In fact, the ants protect the tree by vigorously attacking and stinging other animals that try to eat it.

Tree gets protection (+)

Ants get food and shelter (+)

Now’s your chance to break down these questions and determine the type of symbiosis!Grab your data tables from the beginning of class.

Let’s practice!

Example 1

The African plains are home to millions of species of wildlife. After the dry season, many of the species are drawn back to the plains in search of water and food. Female lions are in charge of providing food for their cubs, and they often hunt gazelles and zebras by lying in the grass and pouncing.

Predation

Example 2

A certain kind of bacteria lives in the intestines of humans and many other animals. The human cannot digest all of the food that it eats. The bacteria eat the food that the human cannot digest and to help digest it, allowing the human to finish the job.

MUTUALISM

Example 3

Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. They get food by eating the host's partly digested food, depriving the host of nutrients.

Parasitism

Example 4

Remora sharks are endowed with an adhesive disk on the dorsal surface of their heads.  They use this adhesive disk to “hitch a ride” on larger animals, usually whales, which tend to be sloppy eaters.  When food floats away from the whale’s mouth, the remora can unhitch itself and collect the scraps of food floating by. 

Commensalism

Example 5

Malacosoma americanum, the eastern tent caterpillar, leaves its tents to feed on the leaves of local hawthorn plants.

Parasitism

Example 6

Oxpeckers land on zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the zebras get pest control. Also, when there is danger, the oxpeckers fly upward and scream a warning, which helps the zebra.

MUTUALISM

Example 7

Clownfish are colorful species located in the Pacific and Indian Oceans. Clownfish live among the forest of tentacles of a sea anemone, a poisonous species to most small fish. Clownfish have a special chemical in their skin which makes them immune to the sting of anemones. The clownfish is protected from potential predators not immune to the sting of the anemone.

Commensalism

Example 8

Within a certain community, crows actively eat brightly colored beetles.

Predation

Independent Practice Time

Clear your desk and get out your Exit Ticket sheet.

Show me what you got!

EXIT TICKET - SYMBIOSIS

1. When organisms interact in a way in which there is mutual benefit to each, it is called ___________.

2. The organism Splendiforous checkus grows specifically in the bloodstream of Harrius potterus, causing itching, rash, and fever. The relationship between these two organisms is an example of ___________.

3. The bear waits in the stream for salmon to swim up to breed. As salmon jump through the air, the bear catches and eats them. This is an example of ________.

4. The remora is a fish that attaches to the side of sharks, using the sharks as an easy ride to the next location. This relationship is an example of __________.

5. The rat population in the backyard of a house is growing out of control. One biological way to reduce the population of rats is to introduce organisms that are

1. A. mutualistic with rat mothers B. nurtured by rat fathers2. C. predators of rat young D. preyed on by rat families

Switch gears to IPC!

Physical and Chemical Properties

Physical Properties•Properties of substances that we can directly measure

Physical Changes

•Changes in the way the material looks or its physical properties, NOT the actual identity or chemical composition ▫EX: State changes, mixing, boiling,

something you can UNDO

State changes of water

A PHYSICAL CHANGE!

Physical Changes

Boiling/CondensationMelting/FreezingMixing/DissolvingGrinding/Smashing

Mixing and Dissolving – Physical Change!

•Salt water – water will evaporate and leave salt behind

Physical Weathering• Rock is slowly weatheredaway by water, a physical change

- The Grand Canyon

The RockCycle

Chemical Properties

•How matter will change when it reacts with other matter

•Ex: reactivity▫Look out!!! When you see the following questions,

they are asking about Chemical Properties

▫“_______reacts with _______” or

▫“_____ chemically combines with ____ to form ______”

Chemical Changes

•A change that alters the chemical composition of a substance

•It cannot typically be returned to the original form

7 words that mean chemical change

Burn Rot Rust/

Oxidize React

Explode Digest

Burn Rot Rust/Oxidize

React Explode Digest

Lab Stations

•4 stations around the room