Question

Which of these interactions is an example of a symbiotic relationship?

• A. The alga and the fungus in a lichen
• B. A tapeworm in the human intestine
• C. A deer eating grass
• D. An eagle eating a mouse

Answer 1

The correct option is A

The alga and the fungus in a lichen

The correct option is A.

The correct answer is the alga and the fungus in a lichen.

Explanation for correct answer

1. Lichens consist of a fungus and an alga.
2. The fungus absorbs nutrients from its environment, while the alga, which contains chlorophyll, makes food.

Explanation for incorrect answer

Option B: A tapeworm in the human intestine is a parasitic relationship in which the tapeworm absorbs all the nutrients taken by the human.

Option C: Deer-eating grass is a consumer relationship in which grass is consumed by deer

Option D: Eagle-eating mouse is a consumer relationship in which the mouse is the prey of the eagle.

So, The alga and the fungus in a lichen is an example of a symbiotic relationship.