Xylem

Wood is a fantastic example of xylem, which is a transport tissue in plants that transports mainly water and other nutrients. Wood absorbs water and transports it throughout the tree.

Thorn of a plant

Thorns are hard structures that have pointed ends that usually reside on the stems of plants. Here they lie on a rose bush.

Spore

A spore is a reproductive structure used to disperse and survive in unfavorable conditions. Spores are seen here on the back of this fern preparing to reproduce.

Phloem

Phloem is plant tissue that carries the plant's essential nutrients, or food, to where it needs to go. On trees, bark acts as phloem transporting nutrients around the tree.

Insect

This very odd looking caterpillar on the side of my house is known as an insect. This is merely the larval form of what is to be a butterfly or moth, which the characterization of insect applies to. An insect is an arthropod with a head, thorax, and abdomen. While the caterpillar may lack these characteristics, butterflies and moths do not.

Long day plant

Clover is known as a long day plant because it requires fewer than a certain number of hours of darkness in a day, and has a specific required amount of sunshine.

Gastropod

Gastropods, or organisms with "stomach feet", are snails and slugs. Snails are defined as gastropods that carry a shell on their back large enough for the softest parts of the snail to withdraw into.