Glycogen

The starches in foods such as this potato help rebuild and replenish the glycogen in our bodies. Glycogen is a polysaccharide that is used for energy storage, mainly carbohydrates, in animals. It is primarily found in muscle cells and stores the glucose the body doesn't use for later.

Exoskeleton

This picture of a spider is an example of an organism that has an exoskeleton. Organisms such as spiders, grasshoppers, ants, beetles, and other insects and arachnids all have exoskeletons. Exoskeletons are hard, shell-like, external coverings that provide protection and support.

Modified Stem of a Plant

In this picture is an example of a modified stem of a plant. This stem has been modified by the growing of thin, white, hair-like bristles along the outside of the stem. Bristles like these on modified stems have the purpose of adding protection, controlling the plant's temperature, and attracting insects that benefit the plant.

Pollen

In this picture is what is called pollen. The pollen in the picture is the yellow, granular substance found on the anther of the flower. Pollen's grains contain the male reproductive cells of the flower, that are fertilized by other flowers as they are dispersed by wind, water, or other organisms.

Modified Leaf of a Plant

This is a picture of celery. Celery is an example of a modified leaf of a plant. Leaves on plants might be modified to support the plant, protect the plant from bugs and other things that might harm or eat it, and/or to assist in photosynthesis. With celery, its petioles, the stalks we eat, are modified to contain large amounts of water.

Phloem

This gymnosperm contains a living tissue called phloem. Phloem is a vascular tissue that conducts nutrients and sugar from a plant's leaves produced by photosynthesis and disperses it to other parts of the plant. All vascular plants, some examples being gymnosperms, angiosperms, and ferns, contain phloem.

C3 Plant

Lawn grass is an example of a C3 plant. The Calvin cycle for C3 plants takes place in the chloroplast. C3 plants take in carbon dioxide through the stomata, and after photosynthesis takes place, they release oxygen back into the air. The vast majority of green plants are C3 plants.