Symbiotic Relationships/Abiotic&Biotic

One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?

• An organism that eats another organism

• An organism that participates in symbiosis

• An organism that is eaten by another organism

• An organism that benefits at the expense of another organism

While growing on a lawn, some weeds, such as dandelions, struggle to get the nutrients and water that other plants, such as grass, also need to survive. This is an example of which of the following?

• predation

• commensalism

• parasitism

• competition

Tags

NGSS.MS-LS2-1

Which of the following is an example of parasitism?

• bees and flowers

• a tick on a dog

• barnacles attached to a whale

• a wolf and a rabbit

Sadie knows that bacteria can make people sick. Her teacher told her that bacteria are also necessary in any ecosystem. What positive role do bacteria play in an ecosystem?

• Bacteria help in the transfer of oxygen between cells in multi-cellular organisms

• Bacteria break down organic material and return nutrients to the surrounding environment

• Bacteria use photosynthesis to create a major food source for animals in an ecosystem

• Bacteria release large amounts of oxygen into the atmosphere

Tags

NGSS.MS-LS2-3

Bacteria in the intestines of cows gain nutrients and aid in the cow's'  digestion

• commensalism
• mutualism
• parasitism
• competition

Tags

NGSS.MS-LS2-3

Match the following

• 1 benefits the other is killed

• Predation

• 1 benefits the other is harmed

• Commensalism

• A win-win relationship

• Mutualism

• Organisms fighting for resources

• Parasitism

• 1 benefits the other is unaffected

• Competition

Tags

NGSS.MS-LS2-2

A bison walks through the grass, insects fly up and are seen and eaten by egrets.  This neither harms nor helps the bison, but it is easier for the egrets to get food.

• mutualism
• parasitsm
• commensalism
• competition

Tags

NGSS.MS-LS2-2

Which of the following is an example of parasitism?

• human and mosquito

• bee and flower

• shark and remora

Tags

NGSS.MS-LS2-4

What does symbiosis mean?

• living separately, no relationship between two species

• living together, close relationship between two species

• living in a community with no interaction between each other

Tags

NGSS.MS-LS2-2

Why is the bee and flower an example of mutualism?

• Both the bee and flower benefit.

• The flower benefits and the bee is not changed.

• Only the bee benefits and the flower is harmed.

Tags

NGSS.MS-LS2-2