What is the difference between the alternation of generations in seeded plants and seedless plants?
In vascular plants, the sporophyte generation is dominant. In seedless vascular plants such as ferns, the sporophyte releases spores from the undersides of leaves. In seed plants, the gametophyte generation takes place in a cone or flower, which forms on the mature sporophyte plant.
How does reproduction occur in seedless plants?
Primitive seedless plants, like ferns, mosses and liverworts, reproduce with spores. Spores, like seeds, are ultimately the result of sexual reproduction. Unlike seeds, spores are usually a single reproductive cell.
How is the alternation of generations different in seedless vascular plants than in bryophytes?
Both show alternation of generations. But, in bryophytes, the gametophyte is dominant while in seedless vascular plants, the sporophyte is dominant. Moreover, bryophytes lack true stem, roots and leaves while seedless vascular plants have true stem, roots and leaves.
What is the alternation of generation in plants?
Alternation of generations (also known as metagenesis or heterogenesis) is the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct haploid sexual and diploid asexual stages. The haploid spores germinate and grow into a haploid gametophyte.
What are 2 differences between seedless vascular plants and seed plants?
The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. Seed plants mainly multiply by seeds. Seedless plants multiply by spores that may produced asexually or as a consequence of asexual reproduction.
What are two advantages that seed plants have over seedless plants?
For example, when a seed begins to grow, the young plant uses the food stored in the seed. The spores of seedless plants don’t have stored food to help a new plant grow. Another advantage of seed plants is that seeds can be spread by animals. The spores of seedless plants are usually spread by wind.
Where do seedless plants grow from?
Most seedless plants live in damp and shady habitats. Certain types of mosses, called PEAT MOSSES, grow in vast expanses of wetlands in the northern parts of the world.
Where are seedless vascular plants found?
Ferns, club mosses, horsetails, and whisk ferns are seedless vascular plants that reproduce with spores and are found in moist environments.
What are the sporophyte and gametophyte generations how do these generations differ in nonvascular seedless vascular and seed bearing plants?
The life cycle of seedless vascular plants is an alternation of generations, where the diploid sporophyte alternates with the haploid gametophyte phase. The diploid sporophyte is the dominant phase of the life cycle, while the gametophyte is an inconspicuous, but still-independent, organism.
How does alternation of generations differ between bryophytes and the primitive tracheophytes describe in one or two sentences?
Tracheophytes attain large size but brypohytes are tiny plants due to the absence of vascular system. Bryophytes also differ from tracheophytes in the pattern of alternation of generations. Sporophytic generation reproduces asexually by meiospores. Haploid meiospores germinate to produce gametophtic generation.
What are the two generations of plants?
The sexual phase, called the gametophyte generation, produces gametes, or sex cells, and the asexual phase, or sporophyte generation, produces spores asexually. In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set).
What is alternation of generations name the two generations in plants life cycle schematically represent different life cycle patterns in plants?
Plants alternate between the diploid sporophyte and haploid gametophyte, and between asexual and sexual reproduction. Therefore, the life cycle of plants is known as alternation of generations. The dominant generation in vascular plants is the sporophyte, while in the non-vascular plants is the gametophyte.