BRYOPHYTES Flashcards
What are bryophytes?
- Earliest members of
land plants - High humidity/access
to water important - Mosses common in
forests, edge of fields
What does a sporophyte do?
- Bryophyte sporophyte
stage grows from the
gametophyte - Sporophytes receive
water and nutrients from
the gametophyte - Sporangium is the organ
producing meiospores
for wind dispersal
What are the three types of bryophytes?
-Liverworts
-Hornwort
-Mosses
Characteristics of liverworts
Phylum Hepatophyta, include the
most primitive plants and range from forms
with dichotomously branching thalli (ca 1000
spp) to leafy moss-like forms (ca 8000 spp
Characteristics of hornwort
Phylum Anthoceratophyta, are a
small group ( ca 500 spp) with multilobed
flattened thalli and elongated narrow sporangia
(shaped like horns of some antelope
Characteristics of mosses
Phylum Bryophyta in the narrow
sense, include a large number of small leafy
plants (ca 14,500 spp) producing sporangia with
a central sterile column. Mosses differ greatly in
colour, stem and leaf traits, habit orientation and
habitat preferences