Chlorophyll A and B, starch as storage product, cellulose in cell walls.
Give brief synopsis of what happens from microsporangium to sperm? In other words the male phase of the seeded plants.
The microsporangium will undergo meiosis and produce microspores which will eventually turn into pollen grains, otherwise known as micromateophytes. These microgametophytes, each containing a few cells, will have one of them undergo mitosis to produce 2 sperm cells after pollination.
What occurs after fertilization in the gymnosperm life cycle?
The integument becomes the seed coat and the ovule becomes the seed. There is food reserve derived from the female gametophyte and a 2n embryo within the seed. A seedling will eventually blossom into a sporophyte. Pollination to seed can take up to three years
What are the functions of the phases of cellular division with respect to meiosis?
Prophase: the diploid cell with 4n DNA are now sister chromatids and pairs of these align to form tetrads; the non sister chromatids wil connect at the chiasma points ( crossing-over )
Metaphase I: tetrads align at cell equator
Anaphase I: sister chromatid begin moving toward opposite poles
Metaphase II: 1N chromosomes align at metaphase plate
Anaphase II: chromatids separate and begin moving toward different poles ( becomes 1N)
Telophase II: nuclear envelope forms and 4 1N daugter cells are produced
What does Menel's Law of Segregation say?
Two alleles separate during meiosis and end up in two different gametes.
Give brief synopsis of what happens from megasporangium to egg. In other words, the female phase.
The megasporagium undergoes meiosis and gives rise to Megaspores which are enclosed in ovules (unfertilized seeds). These ovules will eventually give rise to the megagametophyte and finally the egg cell. The ovule has a section called the micropyle within the integument, where the pollen grains will actually be physically transferred.