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Phylum Lycophyta common name

club, spike mosses

Phylum Lycophyta true plant organs

stems, roots, leaves (microphylls and megaphylls)

Microphyll

very small, one vein of vascular tissue, xylem and phloem

Megaphyll

normal leaves, large, many veins of vascular tissue

Phylum Lycophyta growth of stem and roots

all display primary growth and some display primary and secondary growth

primary growth

tip of stem and roots at region of apical meristem leads to herbaceous soft tissues that allow for elongation

secondary growth

involve lateral meristems for increased cambium width

Phylum Lycophyta cladistics

monophyletic

Phlyum Lycophyta 3 families

Lycopodiaceae, selaginellaceae, iscetaceae

Family Lycopodiaceae life cycle

homosporous sporic life cycle

Family Lycopodiaceae spore size

homosporous

Family Lycopodiaceae gamete type

oogamous

Family Lycopodiaceae growth

primary growth only, herbacious

Family Lycopodiaceae sporophyll

fertile leaf, microphyll (2n)

Family Lycopodiaceae gametophyte stage energy

energy from symbiotic fungus

Family Selaginelliaceae gamete type

oogamous

Family Selaginelliaceae growth

primary only

Family Iscetaceae common name

smallest trees in the world

Family Iscetaceae era

carbniferious period

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