distinguishable key traits of land plants
- 3 main classes - seed producing vascular, spore producing vascular and bryophytes.
- bryophytes have no vascular bundles
- spore producing gametophyte is free living
- seed producing female gametophyte is contained within seed
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| Term | Definition |
|---|---|
distinguishable key traits of land plants | - 3 main classes - seed producing vascular, spore producing vascular and bryophytes.
- bryophytes have no vascular bundles
- spore producing gametophyte is free living
- seed producing female gametophyte is contained within seed |
key characteristics of Bryophytes (5) | - small compact green plants
- no vascular bundles
- need water to reproduce
- obtains nutrients from dust, rainwater and soil water
- alternation of generations - gametophytes dominates the life cycle |
explain thallus structure in Marchantia (5) | - notch at apex
- dichotomous branching
- dome shaped
- hexagonal pattern on the upper surface of thallus
- central groove that extends behind notch |
sexual reproduction life cycle of Marchantia | antheridium (with sperm) fertilizes archengonium forming zygote to embyro. embyro to sporophyte which goes through meiosis which produces new plant asexually (gemma cups), a female thallus and or male thallus.  |