Nonvascular Plants Mosses, Liverworts, Hornworts
Nonvascular Plants
Mosses, Liverworts, Hornworts
Moss ->
Liverworts ^ Hornworts ^
Nonvascular Plants – Bryophytes
● *Exist in three classes: Mosses, hornworts, and liverworts
● * A plant that lacks specialized tissues
● *Small and low to the ground
● *All live in damp environment
● *Does not have roots, stems, or real leaves
● *Uses alternation of generation to reproduce
● *All reproduce with spores
● *ALTERNATION OF GENERATION: two phases of reproduction: first the gametophytes which leads to sporophytes
● It is a cycle and can start at any point
Mosses, Liverworts, and Hornworts Life Cycle
*Spores: small, dust-like particles that float off and grow new plants*Water is required for the process for gametes to travel
Mosses
● Grow in damp environments
● *Reproduce with spores
● *Mosses grow on soil, the bark of trees, and rocks
● *Mosses are soft and leafy: almost like carpet
Moss Continued
Liverworts● Liverworts also grow in damp environments ● *Reproduce with spores
● *Liverworts named after their liver appearing shape
Liverworts Continued
Liverworts sporophytes are either like rubbery, green flowers or bulbs on a stem
● *Hornworts are named for their long horn like structures: which is their sporophytes
● Least common non-vascular plant (less than 150 types)
● Also grow near the ground in damp environments
Hornworts
Class discussion
(points to think about)
● Why are nonvascular plants small?
● How are they unique to other plants (vs vascular plants) in structure and size?
● Why does the structure effect size?
Homework:
-Briefly describe how each of the classes of non-vascular plants are unique in appearances.
-Fill in the life cycle (alternation of generation) including gametophyte, sporophyte, spores, gametes, and zygote.
Follow up