Pteridophyte Life Cycle:
Ferns have vascular tissus in there stems but not in their hyphae or fronds. They require water for fertilization. The sporophyte generation becomes dominant. Fronds, or fern sporophyte show sori on the underside.
Vascular tissue or, transport tubes of plants. Xylem (to conduct water from roots to shoots) and Phloem (to conduct the products of photosynthesis from shoots to roots). Allows structural support to plant tissue. Movement of water and nutrients. So plants can be larger.
First vascular plants:
Vascular
- water transport system
- xylem, phloem, roots, leaves
Swimming sperm
- flagellated sperm
Life cycle dominated by sporophyte stage
- leafy fern plant you are familiar with is diploid
- fragile gametophyte
Spores for reproduction
- haploid cells which sprout to form gametophyte
Gametophyte Generation:
Ferns gametophyte is called prothallus, very small and produces the gametes. Homospory, male and female on the same plant.
Examples: Selaginella, ferns, psilotum, and horsetails
Ferns have vascular tissus in there stems but not in their hyphae or fronds. They require water for fertilization. The sporophyte generation becomes dominant. Fronds, or fern sporophyte show sori on the underside.
Vascular tissue or, transport tubes of plants. Xylem (to conduct water from roots to shoots) and Phloem (to conduct the products of photosynthesis from shoots to roots). Allows structural support to plant tissue. Movement of water and nutrients. So plants can be larger.
First vascular plants:
Vascular
- water transport system
- xylem, phloem, roots, leaves
Swimming sperm
- flagellated sperm
Life cycle dominated by sporophyte stage
- leafy fern plant you are familiar with is diploid
- fragile gametophyte
Spores for reproduction
- haploid cells which sprout to form gametophyte
Gametophyte Generation:
Ferns gametophyte is called prothallus, very small and produces the gametes. Homospory, male and female on the same plant.
Examples: Selaginella, ferns, psilotum, and horsetails