Is a tree considered a Gametophyte or a Tree?
The tree is diploid, and it represents the dominant generation of sporophytes. It bears flowers that produce haploid spores during sexual reproduction. The spores become tiny gametophytes with only a few cells. The pollen grain is formed when the male gametophyte matures.
What does Gymnosperm literally mean?
Gymnosperm is a vascular plant that reproduces through an exposed seed or ovule. This is in contrast to angiosperms or flowering plants whose seeds are contained by mature ovaries or fruits. Many gymnosperm seeds (literally, “naked seeds”) are carried in cones. They are not visible until they mature.
Do angiosperms have a dominant Sporophyte stage?
Life cycle of an angiosperm. This is represented by a pea (genus Pisum). While the dominant generation is the sporophyte, multicellular male and feminine gametophytes can be found within the flowers.
What are the stages of alternation of generations?
The sexual phase, also known as the gametophyte or sex cell generation, is responsible for the production of gametes or sex cells. While the sporophyte or asexual phase produces spores sexually, it’s called the sporophyte or sporophyte phase. The gametophyte has a single set, while the sporophyte has two.
Why does the Sporophytes develop where the Archegonium was found on the gametophyte?
Antheridia are a group of biflagellate, sperm cells that produce many egg cells. These cells require liquid water to swim to their eggs. Archegonia, on the other hand, produce one egg cell within a chamber called the venter. The archegonia will produce the zygote, and the sporophyte that results from it.
What are the stages of mitosis in plant cells?
Mitosis actually takes place in four phases. These phases are prophase (metaphase), metaphase, anaphase and telophase.
Does mitosis happen in plants?
In plants, mitosis occurs throughout the life cycle in growing areas called the meristems. As cells age, replacements are made. Active mitosis replaces skin cells and red blood cell cells in the skin and bone.