Echinoderms

Ecological pyramids

Ecology

Ecosystem

Ecosystem Stability

Ecotone

Ectotrophic

(roots with mycorrhizae)

Edible

Egg apparatus

Egg Cell

                    DIAGRAMS:  Saprolegnia Egg Cell

                                              Marchantia Egg Cell / Marchantia Egg Cell

                          PHOTOS:

Egg Fungi

Egg Nucleus

Egg

(venter)

Eggs

Elaters

                    DIAGRAMS:  

                          PHOTOS:   Marchantia / Marchantia

Electrochemical Gradient

Electron Transport System

Elliptical

Elm

Elongate

Elongation Zone

                    DIAGRAMS:  Root Anatomy

                          PHOTOS:   Longitudinal Section of the Root

Embryo sac

Embryonic Secondary Roots

Embryonic Root

The embryonic root is the structure that will become the root in a mature plant.  When it grows out of the seed and into the soil, it grows downward.  Its formal name is Radicle.

Embryonic Shoot

The embryonic shoot is the structure in the seed that will become the stem of the new plant and grows upward through the soil surface.

Embryos

                    DIAGRAMS:  

                          PHOTOS:   Saprolegnia / Wheat Seed

Emerge

(scutellum does not)

Emulsifier

Enations

                    DIAGRAMS:  Psilotum

                          PHOTOS:   Psilotum Stem Cross Section

Encyst

Endocarp

Endodermis

                    DIAGRAMS:  Root Vascular Cylinder / Root Anatomy

                          PHOTOS:   Root Cross Section / Root Cross Section

                                              Wheat Seed Longitudinal Section / Seed Cross Section

                                               Equisetum Stem Cross Section  

                                               Fern Rhizome Cross Section
                                               Fern Rhizome Cross Section

Endoplasmic Reticulum

The endoplasmic reticulum is a spider web of  canals, each canal surrounded by a cellular membrane,  that is embedded within the cytoplasm.  Ribosomes (protein synthesis factories) typically are attached along the margin of the endoplasmic reticulum.

                    DIAGRAMS:  Golgi Complex / Rough Endoplasmic Reticulum

                          PHOTOS:  

Endosperm

                    DIAGRAMS:  

                          PHOTOS:  

Endospores

Endosymbosis

Endothecium

                    DIAGRAMS:  

                          PHOTOS:   Moss Capsule Cross Section / Moss Capsule Cross Section

Endotrophic

(roots with mycorrhizae)

Energy

Entropy

Environment

(as relates to stimuli to the plant)

Enzyme

Ephedra

Epicotyl

Epidermis

The epidermis is a layer of cells on the exterior of stems and leaves as well as other plant organs. This is a protective layer that keeps out bacterial and fungal spores as well as sealing the plant organ from loss of water.  Cutin, secreted by the epidermal cell,  is a waxy material that allows the epidermal cell to be very effective in preventing water loss. In cross section, the epidermis looks like small bricks.  Looking at epidermal cells from the top down, they have the appearance of a jigsaw puzzle pieces.

                    DIAGRAMS:  Stomata / Root Anatomy / Woody Stem / Equisetum

                                              Ovary Position

                          PHOTOS:   Tilia Stem Cross Section (6-year)
                                              Tilia Stem Cross Section (3-year)

                                              Monocot Stem Cross Section / Monocot Stem Cross Section

                                              Leaf Cross Section / Leaf Cross Section

                                              Root Cross Section / Root Cross Section

                                              Fucus / Fucus / Fucus / Fucus / Fucus

                                              Puccinia / Puccinia

                                              Anthoceros

                                              Moss Stem Cross Section
                                              Moss Leaf Cross Section

Epigynous

Epigynous ovaries have the flower parts (calyx, corolla, and androecium) attached above the ovary to the top of the ovary.  Epigynous and inferior ovary are synonymous terms.

                    DIAGRAMS:  Epigynous Ovary   

                          PHOTOS:  

Epiphytic Communities

Equilibrium

Equisetum arvense

                    DIAGRAMS:  Equisetum Strobilus / Equisetum Stem

                          PHOTOS: Equisetum Stem Cross Section / Equisetum Stem Cross Section
                                            Equisetum Stem Cross Section / Equisetum Stem Cross Section
                                            Equisetum Stem Cross Section

                                            Equisetum Rhizome Cross Section
                                            Equisetum Rhizome Cross Section
                                            Equisetum Rhizome Cross Section

                                            Equisetum Gametophyte / Equisetum Gametophyte

                                            Equisetum Strobilus Cross Section

                                            Equisetum Spores

Erosion

Escherichia coli

Estuaries

Etching

Ether

(ethylene smells like this)

Ethylene

Etiolated Stems

Eukaryota

Eukaryote Flagella

Evaporates

Evergreen

Evergreen Forest

(biomes)

Evergreen Broadleaved Trees

Excurrent

Excurrent branching is the type of branching that exists in a pine tree.  There is one main trunk with a whorl of branches at each node.  This is also known as Monopodial Branching.

Exocarp

Expansion

(leaf growth)

Extant

Extinct

Extracellular

Extreme Halophiles