Transcript SECTION 2 - Florida Union Free School District

SECTION 2
SEEDLESS REPRODUCTION
Importance of spores
Use spores to reproduce
 In sporophyte stage, sex cells are
produced in spore cases
 Spores are released and spread by
wind, water, and animals becoming
new plants
 Can be from vascular or nonvascular
plants

Nonvascular seedless plants
Mosses, liverworts and hornworts
 Life cycle similar to sexual
reproduction

Moss lifecycle
Plant looks green – (gametophyte
stage). produces sex cells
 Moss looks brownish – (sporophyte
stage). grows little stalks
 Tip of stalks contains spores for
making new moss

Nonvascular plants and asexual
reproduction

Pieces of plants (cuttings) can grow
into new plants and form sex cells
Vascular seedless plants and fern
life cycle

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


Most are ferns and have fronds as leaves
Grow from a rhizome which can form new
plant asexually
Roots grow from rhizome
Produce spores in sori, located on
underside of frond
Spores grow into a green, heart shaped
prothallus that has chlorophyll