Daily TAKS Connection: Interactions Among Organisms BIO (12): The student knows that interdependence and interactions occur within an ecosystem. The student is expected to: (B) interpret interactions among organisms exhibiting predation, parasitism, commensalism, and mutualism

Day 1 Construct a four door, shutter fold foldable Materials: Foldable handout Scissors Pen Colored pencils/crayons Instructions: Fold the paper along the solid fold lines (front side facing you) Cut the paper along the dashed lines Record your name, date and period on the reverse Color the 4 terms (predation, parasitism, commensalism, and mutualism) each a different color

Day 1 notes Record the notes from under the appropriate door on your foldable Mutualism: A relationship in which both organisms benefit from the relationship. Example: Clown Fish & Sea Anemone – the fish receives protection from enemies and the anemone receives scraps of leftover food from the fish Commensalism: A relationship in which one organism benefits, and the other is neither helped nor harmed Example: Egret & Rhino – the bird receives protection from predators by its proximity to the rhino and the rhino is neither helped nor harmed

Day 2 notes continued… Parasitism: A relationship in which one organism, who lives on another, benefits, and the other organism is harmed. Example: Fleas & Dog – the fleas gain nourishment from the dog and the dog itches from the bite Predation: A relationship in which one organism benefits (the predator) and the other organism is killed/consumed (the prey) Example: Lion & Zebra/Rabbit & Lettuce – the lion eats the zebra; the rabbit eats the lettuce

Question 1 Which situation best represents a parasitic relationship? a. A tapeworm absorbing nutrients from the intestine of a dog b. An orchid being pollinated by a nectar collecting wasp c. A bear eating a berry d. An armadillo rooting in the soil at the base of an oak tree

Question 2 Which situation best represents a commensalistic relationship? a. A tapeworm absorbing nutrients from the intestine of a dog b. An orchid being pollinated by a nectar collecting wasp c. A bear eating a berry d. A bird builds a nest in a tree.

Question 3 Which situation best represents a predator/prey relationship? a. A tapeworm absorbing nutrients from the intestine of a dog b. An orchid being pollinated by a nectar collecting wasp c. A bear eating a berry d. An armadillo rooting in the soil at the base of an oak tree

Question 4 Which situation best represents a mutualistic relationship? a. A tapeworm absorbing nutrients from the intestine of a dog b. An orchid being pollinated by a nectar collecting wasp c. A bear eating a berry d. A student eating a hamburger