Ecological Relationships

Pseudoscorpions often hitch rides on the backs of large beetles or true bugs. What is the ecological relationship?

• Mutualism
• Commensalism
• Parasitism
• Cooperation

Barnacles sometimes live on the outside surface of other larger shelled organisms without causing any harm. What is the ecological relationship?

• Mutualism
• Parasitism
• Commensalism
• Predator-Prey

Cows and pronghorn both eat the same types of food in areas of Utah. What is the ecological relationship?

• Cooperation
• Parasitism
• Commensalism
• Competition

Ants protect soft bodied aphids and in return the aphids feed the ants a sugary drink. What is the ecological relationship?

• Cooperation
• Parasitism
• Commensalism
• Mutualism

What is the ecological relationship shown in this image of a robberfly and beetle?

• Cooperation
• Parasitism
• Predator-prey
• Competition

Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment.

• commensalism
• parasitisim
• mutualism

Oxpeckers feed on the ticks found on rhinoceros. Both species benefit.

• commensalism
• parasitism
• mutualism

Silverfish live and hunt with army ants. They share the prey. They neither help nor harm the ants.

• mutualism
• commensalism
• parasitism

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

The living portions of the ecosystem.

• Biotic factors
• Abiotic factors