Cambium: Cambium is the tissue layer of a plant/tree that contains dividing reproductive cells that generate plant/tree growth. If this layer of the plant/tree is damaged the plant/tree may die. The cambium layer of a tree can be found between the bark of the tree and the wood of the branches and trunk. This layer is responsible for creating the rings inside the bark of trees by adding a new ring each year.

Pollen: Pollen is a mass consisting of yellowish, fine, powdery spores or grains acting as the fertilizing component of flowers. Pollen is what is transferred between pollinators and other plants in the pollination process.

Heterotroph: Heterotrophs are organisms that cannot produce their own food. Examples of heterotrophs are animals and humans (as shown in the example above). Since heterotrophs cannot produce their own food,, they must consume organisms such as autotrophs in order to obtain energy. Examples of this are humans eating vegetables and dogs eating grass.

Ectotherm: An ectothermic organism is an organism whose body temperature fluctuates depending upon the organism’s environment. Ectothermic organisms are typically “cold-blooded” organisms such as reptiles. Pictured above is a lizard which is an example of a reptile.

Eukaryote: Eukaryotic cells are one of the two types of cells possible in organisms. Eukaryotic cells differ from their complementary cells (prokaryotes) as they can either be multicellular or unicellular. Cells are classified as eukaryotic when a cellular membrane and membrane bound organelles are present along with a nucleus that stores DNA. Examples of eukaryotic cells are fungi, plants, and animals excluding bacteria (as shown in the example above).