Where do they fit in, in the classification scheme?

Domain:
    Eukarya because it has a true nucleus, membrane bound organelles, and multiple,
    linear chromosomes.

Kingdom:
    Plantae because it contains a cellulose cell wall,
   chloroplasts for photosynthesis, and is multicellular.

Phylum: 
    Coniferophyta because it is capable of secondary growth,
    is monoecious, and has protective buds.

Class:
    Pinopsida because it has small and simple leaves and
    undergoes secondary growth of the root and stem.

Order:
    Pinales because it has needle-shaped leaves and has a
    straight trunk with horizontal branches.

Family:
    Pinaceae because it has well developed scales with seed wings.

Genus:
    Pinus because it produces its needles in bundles called fascicles and undergo spiral
    growth.

Species:
    Pinus strobus translates to "coned-pine."

The line drawing to the left is a broad cladistic phylogenetic tree, based on morphological features, that helps to depict where the Eastern white pine tree fits in with the land plants. It shows that all land plants have a common ancestor with the green algae. Pinus strobus follows the path of the red line up to the phylum coniferophyta. It has naked seeds, thus being in the group, gymnosperms, and has vascular tissue of xylem and phloem.

The image at the right is a phylogenetic tree that shows the different genera within the family of the pinaceae. All members of the family pinaceae have female and male cones and needle-like leaves. The different genera are based on morphological features, generally having to do with needles or cones and their shape, size, and arrangement.




                                                                     


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