Post on 24-Feb-2016
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MOSSES AND FERNS
WHAT DO MOSS AND FERNS HAVE IN COMMON?
Both do not produce seeds Both are considered “simple” plants Both produce “spores” at some point in
their life cycle Both are relatively small (not tree
sized)
BRYOPHYTA (NON VASCULAR) This group includes the mosses and the
liverworts Has two life stages (gametophyte and
sporophyte) [most of life spent in gametophyte]
Instead of roots has something called “rhizoids”
LOOK AT THE MOSS LIFE CYCLE ON PAGE 259DO THE ACTIVITY: “MOSS LIFE CYCLE”
TRACHEOPHYTA (VASCULAR) GROUP 1: THE SEEDLESS This group is the ferns They have a vascular system that
transports water throughout their “bodies”
They also have two stages to their life cycle: (gametophyte and sporophyte) [Most of life spent in sporophyte]
FERNS: SPOROPHYTE CHARACTERISTICS Leaves, (or fronds) divided into
leaflets Arranged around a midrib known as a rachis
Spores are produced in clusters known as sori on the underside of the leaf
FERNS: GAMETOPHYTE CHARACTERISTICS Known as a prothallus It is a small, green, heart shaped plant It has a short life span