General Info
Non vascular or Vascular?
Nonvascular
Define Xerophyte
is a species of plant that has adaptations to survive in an environment with little liquid water
Sporophyte vs Gametophyte?
The plant’s haploid phase is called gametophyte and the diploid phase is called the sporophyte.
What does the generative cell produce?
Sperm
Name of the reproductive structure?
Flowers
Define Hydrophyte
a plant which grows only in or on water
Haploid vs Diploid
Haploid spores, which are produced by meiosis, are tiny and easily carried by wind and water; seeds, which contain a diploid sporophyte embryo
How are pollen grains transferred to the stigma?
Insects
Key characteristics of this phylum?
1. seeds inside of a carpel
2. Hardwoods
3. No antheridia and no archegoina
4. Heterosporous
Examples of Xerophyte
cacti, pineapple and some gymnosperm plants
Mitosis vs Meiosis
Male gametophytes divide by meiosis to generate haploid microspores, which, in turn, undergo mitosis and give rise to pollen grains
What is endosperm?
the food storage material for flowering plants
Why are plants in this phylum considered the most advanced plants?
They show the most advanced structural organization in the plant kingdom, enabling them to inhabit a very diverse range of habitats.
Examples of Hydrophyte
Lotus, Vallisneria, Hydrilla, and other aquatic plant bodies
Egg/Sperm and Fertilization
Each pollen grain contains two cells: one generative cell that will divide into two sperm and a second cell that will become the pollen tube cell
The fertilized zygote becomes what?
Seeds or Seedless?
Seeds
Name an other adaption that a flowering plant has
Slower growing requires less energy. The plants don't have to make as much food and therefore do not lose as much water
Which is the dominant generation?
Diploid sporophyte generation
What are the three parts of the carpel?
Stigma, style, ovary