Bryophytes:
- Gametophyte lifecycle dominated
- Only vascular tissue found in sporophyte stage
- Heterosporous (Spores each have a gender)
- Dioecious (sexual organs found on different plants)
Pteridophytes:
- Sporophyte lifecycle dominated
- vascular tissue found in stems
- fronds
- Monoecious (both sexual organs found on one plant)
- Homeosporus (spores are both male and female)
Gymnosperms:
- Sporophyte lifecycle dominant
- Vascuar tissue found in all parts of the plant
- Needles
- Seeds instead of spores (found in cones)
- Dioecious (one plant makes both pollen comes (male) and female cones)
- Pollination by air/pollinators
Angiosperms:
- Sporophyte lifecycle dominant
- Vascular tissue in all parts of the plant
- leaves
- Flowers (reproduction) pollen, by air/pollinators
- Seeds encased in fruits.
- Dioecious (both sex organs found on the flower)
Lifecycle Compare & contrast:
Bryophytes |
Pteridophytes |
Gymnosperms |
Angiosperms |
Same |
-Gametophyte Lifecycle dominant -no vascular tissue in Gametophyte stage -Fake roots -Heterosporus -Dioecious |
-Sporophyte lifecycle dominant -Vascular tissue in stem -Fake roots -Homeosporus -Monoecious -Developed fronds |
-Sporophyte stage grows in length -Vascular tissue now throughout the plant -True roots and needles develop -Seeds instead of spores develop male and female cones (monoecious), reproduction by wind pollination |
-Sporophyte stage even longer -Vascular tissue throughout plant (and leaves) -True roots -Reproduction by flowers/pollination. -Seeds covered by fruit. |
-Follow the Alternations of Generations -Vascular tissue present in all -Sporophyte lifecycle dominant + monoecious(Pteridophyte, Gymnosperms, Angiosperms) -Fake roots + spores (Bryo, Pterido) -True roots, seeds, pollen, completely vascular (Gymno, Angio) |