Xylem

This stump of a tree is an example of xylem because tree rings are made of xylem.  The rings are the old xylem tissue.  Each tree ring represents one year that the tree was alive.

Ethylene

A ripening tomato is an example of ethylene because it is the ripening hormone.  The change of color from green to red is a cause of ethylene.

Mutualism

A bee and a sunflower is an example of mutualism because both the bee and the sunflower benefit from this interaction. The bee gets to eat and the sunflower gets to reproduce.

Pollinator

A bee is a pollinator because once it extracts pollen from a flower it distributes the pollen to other areas.

Gymnosperm cone

A pine cone is an example of a gymnosperm cone because the word gymnosperm literally means "naked seed."  The seeds of the pine cone are outside rather than enclosed.

Epithelial tissue

Epithelial tissue is the tissue that covers the skin. My hand is an example of epithelial tissue because as you can see my hand is covered in skin.

Auxin producing area of a plant

A bud of a plant is an example of auxin producing area of a plant because the bud is filled with the plant hormone.

Genetically modified organisms

Rice is an example of genetically modified organism because plant breeders are improving rice to defend against diseases.

Amniotic egg

Fermentation

Red wine is an example of fermentation because yeasts in the wine transform the sugar into alcohol.

Lipid used for energy storage

Butter is an example of lipid used for energy storage because when humans consume this "fat" it will hold and store energy in our bodies.

K-strategist

A dog is a k-strategist because it spends a lot time with its offspring to make sure their offspring are safe.

Analogous structures

The wings of birds are an example of analogous structures because the wings developed independently to adapt to flying.

Radial symmetry

A jellyfish is an example of radial symmetry because they have a central axis from the top of their bell to the bottom of their tentacles.  A jellyfish can be divided into equal portions.