The barnacle is an organism that filters food from the water as it passes by. The barnacle is not able to move on its own, so it needs a hard, flat surface to attach itself to. Barnacles are often found harmlessly attached to the backs of whales. What relationship is most similar to the relationship between a barnacle and a whale?

A.A bird eats the leeches that it removes from the mouth of a crocodile.

B.Bees land on flowering plants, gathering nectar and pollinating flowers.

C.A cow walks and insects fly into the air where the cattle egrets eat them.

D.Mistletoe grows on a maple tree, absorbing the tree’s water and nutrients.

1 answer

D. Mistletoe grows on a maple tree, absorbing the tree's water and nutrients.

This relationship is most similar to the relationship between a barnacle and a whale because mistletoe is a parasitic plant that relies on the nutrients and water from the maple tree it attaches to, just as a barnacle relies on the whale for support and access to food in the water.