Do ferns have alternation of generations?
The life cycle of the fern has two different stages; sporophyte, which releases spores, and gametophyte, which releases gametes. Gametophyte plants are haploid, sporophyte plants diploid. This type of life cycle is called alternation of generations. To follow the life cycle of the fern, begin at number one below.
What is the alternation of generation in gymnosperms?
The life cycle of a gymnosperm involves alternation of generations, with a dominant sporophyte in which reduced male and female gametophytes reside. All gymnosperms are heterosporous. The male and female reproductive organs can form in cones or strobili.
How is alternation of generations different in gymnosperms than in ferns?
1. In both the groups there is alternation of generations but there is reduction in the gametophytic generation of the gymnosperms. In gymnosperms the gametophyte is reduced and is unlike that of ferns as it is completely dependent upon the sporophyte.
What do ferns and gymnosperms have in common?
For example, ferns produce spores, and gymnosperms and angiosperms form seeds. The characteristic common to the members of this class is the leaf with branched venation.
What is alternation of generations in plants?
Alternation of generations means that plants alternate between two different life stages, or generations, in their life cycle; a haploid stage called gametophyte and a diploid stage called sporophyte. The terms haploid and diploid refer to the number of chromosomes contained in the cells.
How are ferns and gymnosperms different?
Ferns are plants that do not bear flowers. They do not have any seeds as well. In this regard, their mode of reproduction is through spores. Gymnosperms on the other hand have seeds, although they are not put inside an ovary.
Why do plants alternate generations?
The alternation of generations allows for both the dynamic and volatile act of sexual reproduction and the steady and consistent act of asexual reproduction. When the sporophyte creates spores, the cells undergo meiosis, which allows the gametophyte generation to recombine the genetics present.
Is a fern a Gymnosperm?
No, they are not gymnosperms. Fern is a pteridophyte. It is a member of a group of vascular plants which reproduce through spores, having neither flowers nor seeds.
Do gymnosperms have dominant generations?
As seen in angiosperms, the gymnosperms too exhibit a dominant sporophyte generation. Like all the vascular plants, Gymnosperms too have a sporophyte-dominant life cycle. They spend most of their life cycle with diploid cells.