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Vascular Plants Without Seeds - Coggle Diagram
Vascular Plants Without Seeds
Key Terms
Cone
Cone
a compact collection of reproductive structures on a short axis
Enation
a small, projecting flap of tissue, thought to have been the ancestor of leaves in the lycophytes
Endarch Protostele
a type of protostele in which the protoxylem is located in the center and metaxylem differentiates on the periphery
Dichotomous Branching
a forking that results in two nearly equal branches
Euphyllophytes
plants that have megaphylls, including horsetails, ferns, and seed plants
Equisetophytes
horsetails
Exarch Protostele
a type of protostele in which the metaxylem is in the interior of the xylem mass and protoxylem is on the edges, in several groups
Horsetails
herbaceous plants with whorls of fused, small megaphyll leaves
Leaf Gap
an area above a leaf trace in ferns where there is no conducting tissue
Leaf Trace
a vascular bundle that extends from the stem vascular bundles through the cortex and enters a leaf
Lignophyte
a plant that develops wood
Megaphyll
a leaf that has evolved from a branch system, present in ferns and all seed plants
Microphyll
the type of leaf that evolved from an enation, present in lycophytes
Monilophytes
ferns
Monopodial Branching
branching in which one shoot is dominant and forms a distinct trunk, with all other shoots being significantly different from it
Overtopping
the ability of one shoot to grow for a longer time than the other shoot that resulted from the branching
Planation
the concept that in the origin of megaphylls, all branching occurred in one plane, resulting in a flat system
Protostele
a vascular cylinder that has no pith, common in roots and early vascular plants
Rhyniophytes
the earliest vascular plants, with terminal sporangia that open along the side and endarch protoxylem
https://www.youtube.com/watch?v=37hEIJXRyFM
https://www.youtube.com/watch?v=h9oDTMXM7M8&t=8s
https://www.youtube.com/watch?v=tsd8KdnvX0U
https://www.youtube.com/watch?v=qepifgubtDA