Photo 18: Bilateral Symmetry

This sliced apple exhibits radial symmetry because it has roughly identical mirroring halves.

Photo 19: Commensalism

The relationship between the fish of the pond and the aquatic plants represents commensalism because the fish are positively effected by the relationship because it provides them food, and the plants are not effected.

Photo 20: Radial Symmetry

This flower represents radial symmetry because if you cut it in half anywhere, the parts would be approximately symmetrical.

Photo 21: Mutualism

The relationship between this honeysuckle bush and the butterflies and hummingbirds living around it demonstrate mutualism by acting as pollen, and pollinators who need each other for survival.

Photo 21: Exoskeleton

This cricket demonstrates another example of exoskeleton because it has a hard outer shell to protect its outsides.

Photo 22: Predation

This spider web represents an example of predation. The spider sets up its web in a bush where it sits to catch insects.