RulesRules: You will be given an : You will be given an interaction between two living interaction between two living organisms. With your team quietly organisms. With your team quietly discuss what type of symbiosis discuss what type of symbiosis you think it is: commensalism, you think it is: commensalism, parasitism, or mutualism. When parasitism, or mutualism. When time is up you will be ask to hold time is up you will be ask to hold up your card to show what type up your card to show what type you think it is. Each correct you think it is. Each correct answer gets your team one point.answer gets your team one point.

The gall wasp lays eggs in an oak tree, causing a The gall wasp lays eggs in an oak tree, causing a lump that isn’t harmful to the tree.  It also gets lump that isn’t harmful to the tree.  It also gets

shelter and food from the treeshelter and food from the tree

CommensalismCommensalism

The cowbird eats pests and parasites off the back The cowbird eats pests and parasites off the back

of the bison which in turn nourish the cowbirdof the bison which in turn nourish the cowbird

MutualismMutualism

The cowbird lays eggs in other birds’ nests and the cowbird chicks The cowbird lays eggs in other birds’ nests and the cowbird chicks hatch early and are much larger than the host egg chicks. The hatch early and are much larger than the host egg chicks. The cowbird either push out the host eggs or because of their aggressive cowbird either push out the host eggs or because of their aggressive

nature over compete for food and the host chicks starve. nature over compete for food and the host chicks starve.

ParasitisParasitismm

Morel mushrooms help the tree roots absorb water and Morel mushrooms help the tree roots absorb water and minerals, and sugar and starches are absorbed by the minerals, and sugar and starches are absorbed by the mushroom.  When the tree dies the mushroom mushroom.  When the tree dies the mushroom

produces spores to reproduce.produces spores to reproduce.

MutualisMutualismm

The monarch butterfly drinks nectar and lays The monarch butterfly drinks nectar and lays eggs on milkweed.  The monarch larvae eat eggs on milkweed.  The monarch larvae eat the milkweed leaves and obtain the leaves’ the milkweed leaves and obtain the leaves’ poisonous chemical which prevents predators poisonous chemical which prevents predators from eating them, the monarch also from eating them, the monarch also

pollinates the milkweed.pollinates the milkweed.

MutualisMutualismm

Mosquitoes eat human blood for Mosquitoes eat human blood for

nutrition to lay eggsnutrition to lay eggs

ParasitisParasitismm

Grape vines grow up the tree to get more Grape vines grow up the tree to get more

light and space.light and space.

Commensalism, Commensalism, but some other but some other vines kill the vines kill the tree which is tree which is parasitism parasitism

Freshwater cyprinid fish deposit eggs in siphon Freshwater cyprinid fish deposit eggs in siphon tube of freshwater bitterling-mussels. Eggs tube of freshwater bitterling-mussels. Eggs develop in gill cavity, decreasing mussel growth. develop in gill cavity, decreasing mussel growth.

ParasitisParasitismm

The human digestive system contains The human digestive system contains bacteria which aide digestion and bacteria which aide digestion and vitamin production, as well as vitamin production, as well as bacteria that leads to disease and bacteria that leads to disease and

death.death.

MutualisMutualismm