Chapter 5 Flashcards
Advantages of Asexual Reproduction
Most common in Wetland Plants
- New individual from only one individual
- Independant of extra individual
- Rapid reproduction
- Time flexible
- Reduces chance
- Stable environments
Advantages of Sexual Reproduction
- Genetic diversity
- Coping with pathogens
- Genetic repair
- Flucuating environments
Two Methods of Asexual Reproduction
- Fragmentation
- Parthenogenisis
Fragmentation
Formation of propagules
Propogule
Clone
Parthenogenisis/ apomixis
Fake sex
emryos grow without fertilization
Apomix
Aggrogate species such as blackberries
Methods of Sexual Reproduction
Spore plants (liverworts, ferns, mosses)
Seed plants (angiosperms, gymnosperms)
How do aquatic plants deal with water and reproduction?
- Aerial inflorescense
- Modified structures to hold flower aerial
- Self-Pollination
- Water pollination (hydrophilly)
Dispersal Methods
Wind
Water
Animals
Gravity
Methods of Germination
Light
Fire
Smoke
Chemical (okra)
Temperature
Seedcoat injury
Seedling Establishment
Big issue for aquatics
Oxygen
low light
Succession
Change in a community over time
Community Dynamics Diagram
Pioneer species—->—->—->Climax Community
Disturbances cause regressions
Secondary Succession