Primrose

The scientific name for the evening primrose is Oenthera Biennis. One of the first flowers of the year, and most common during the spring and Easter, the evening primrose is is a small flowery plant. It is apart of the Plantae

Kingdom and Anthophyta Phylum. It is categorized as a

Magnoliopsida and grows approximatley five inches fully grown

A variety of plants

1) Outline the wide

diversity in the plant

kingdom as exemplified

by the structural

differences between

bryophytes, filicinophytes, coniferophytes, and angiospermiphytes.

Bryophytes (mosses and liverworts):
*No roots, vascular system, or cuticle.
*Rhizoids similar to root hairs.
*Mosses with simple leaf-like structures.
*Liverworts have flattened shape called a thallus.

Filicinophytes (ferns):
*Roots, leaves in fronds, and vascular system.
*Cuticle on leaves.
*Can form small trees but not woody.

Coniferophytes (conifers):
*Shrubs to very large trees.
*Advanced vascular system.
*Woody stems and roots.

Angiospermophytes (flowery plants)
*Advanced vascular system
*Roots, stems, and leaves
*Can form woody tissue

2) Draw a diagram to show the external parts of a named dicotyledonous plant including root, stem, leaf, axillary and terminal buds.

3) Draw a plant diagram to show the distribution of tissues in the stem, root, and leaf of a generalized dicotyledonous plant.

4) Explain the relationship between the distribution of tissues in the leaf and the functions of these tissues.

* Xylem : brings water to replace losses due to transpiration
* Phleom : transports products of photosynthesis. * Stoma : allows CO2 to diffuse in and O2 to diffuse out in reference to photosynthesis * Guard Cells : pair of cells which can open or close the stoma and control transpiration

5) Outline four adaptions of xerophytes

* Thick Stems : high amount of water storage * Vertical Stems : absorbs light * Wide Branching : absorbs water close to the surface
* Thick wax cuticle

6) Outline 2 structural adaptions of hydrophytes

* Air spaces in leaves cause buoyancy * Small amounts of xylem in stem and leaf