Symbiosis

A tick and a dog have this type of relationship.

• mutualism
• commensalism
• neutralism
• parasitism

Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

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

• competition
• symbiosis
• predation

The close relationship between two different species in an ecosystem

• Biosphere

• Ecology

• Symbiosis

• Environment

A frog eats a fly. The frog and fly are demonstrating ________.

• mutualism

• competition

• predator/prey

• parasitism

Ticks live on dogs and feed off the dog’s blood. They may also infect the dog with a parasite that can cause the dog to become quite sick. Dogs also are sometimes found to be very tired because a large volume of their blood has been drained. This is an example of -

• Mutualism

• Commensalism

• Parasitism

• Predation

Mistletoe extracts water and nutrients from the spruce tree to the detriment (ill effect) of the spruce. This is an example of which type of symbiosis?

• parasitism

• commensalism

• mutualism

• predation

What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone