Symbiosis and Competition

A plant called the bullhorn acacia has swollen thorns with hollow spaces inside. A certain species

of ant lays eggs inside these thorns. The ants feed from the nectar of the acacia without harming it.

The ants protect the acacia from insects that want to eat its leaves or bark. What type of relationship

exists between the plant and the ants?

• mimicry

• predation

• parasitism

• mutualism

Tags

NGSS.MS-LS2-2

Lichens consist of fungus and alga. The fungus provides a structure on which the alga can grow. The alga produces sugar that the fungus can use. What type of relationship exists between these two organisms?

• predation

• parasitism

• mutualism

• competition

Tags

NGSS.MS-LS2-2

Large reef fish have a mutualistic relationship with cleaner fish. This means that as a result of the relationship ___________________.

• one fish is hurt

• one fish benefits

• both fish benefit

• neither fish benefits

Tags

NGSS.MS-LS2-2

Bees feed on the nectar produced in flowers. As they feed, pollen in the flower sticks to the bees. When a bee moves on to feed at another flower, some of the pollen is carried with it. Flowers are then able to reproduce. What type of relationship is this an example of?

• parasitism

• mutualism

• competition

• commensalism

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-2

NGSS.MS-LS2-4

a relationship that occurs when two or more organims of the same species need the same resource at the same time

• competition

• symbiosis

• predation

What term describes organisms striving for the same limited resources?

• Competition

• Predation

• Mutualism

• Commensalism

Tags

NGSS.MS-LS2-1

Barnacles attach to whales for a place to live and a type of transportation. The whale is neither helped nor harmed by the barnacles. What type of relationship is this an example of?

• parasitism

• mutualism

• competition

• commensalism

Two populations with limited resources experience ____________________.

• predation

• parasitism

• competition

• commensalism

Tags

NGSS.MS-LS2-2

The word symbiosis has a Greek origin. What is the MOST LIKELY translation of the word in Greek?

• hiding

• building

• making food

• living together

Tags

NGSS.MS-LS2-2

Many people hang mistletoe over doorways during winter holidays. Mistletoe is a plant that feeds on the branches of oak trees. In so doing, it takes away from the nourishment of the tree. What type of relationship exists between oak trees and mistletoe?

• predation

• parasitism

• mutualism

• competition