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Why is it beneficial to have the sporophyte generation dominant in vascular plants?
One possible reason that stands out is that the sporophyte phase has an
advantage over the gametophyte phase because it is diploid rather than haploid.
Having two sets of genes can avoid expression of deleterious traits.
The seed plant pattern of large sporophyte is a very effective system. Remember
the key features:
1. Large sporophyte nurtures the tiny female gametophytes.
2. There are millions of tiny male gametophytes (pollen) that can be carried
great distances, either by wind or by animals.
3. New sporophytes arise from very mobile, usually very tough, seeds that
contain energy supply and tiny plant in suspended animation.
What else can I help you with?
What is the difference between sporophyte and gametophyte?
Sporophyte is the diploid (2n) stage in the life cycle of plants that produces spores through meiosis, while gametophyte is the haploid (n) stage that produces gametes through mitosis. Sporophyte generation is dominant in vascular plants, while gametophyte generation is dominant in non-vascular plants like mosses and liverworts.
Which stage in the alternation of generations life cycle would fern represent?
The Sporophyte life cycle is the dominant stage in Ferns (vascular non-seed plants)
What is pteridophyta give in detailed answer?
Pteridophyta is a plant division that includes ferns, horsetails, and clubmosses. These plants reproduce via spores and have vascular tissues for water and nutrient transport. They typically have a sporophyte-dominant life cycle, where the diploid sporophyte generation is the dominant phase in their life cycle.
What trait do ferns have that mosses do not?
Mosses are non-vascular plants whereas ferns are vascular. In ferns Sporophyte is dominant but in mosses gametophyte is dominant generation. Ferns have definite roots but in mosses leaves and roots are mostly false.
One clear evolutionary trend in the vascular plants is the increasing dominance of what life cycle stage?
The sporophyte generation has shown increasing dominance in vascular plants. This shift is evident in the reduction of the gametophyte generation and the increasing complexity and size of the sporophyte generation over evolutionary time.
Which generation is dominate in seedless vascular plants?
Sporophyte is the dominant generation.
What generation is dominant in moss?
The dominant generation in mosses is the gametophyte generation. This is the photosynthetic, leafy structure that produces gametes for sexual reproduction. The sporophyte generation in mosses is much smaller and dependent on the gametophyte for nutrients.
What is the dominant generation of Bryophytes?
In vascular plants, the principal generation phase is the sporophyte, which is usually diploid with two sets of chromosomes per cell. By contrast, the principal generation phase in non-vascular plants is usually the gametophyte, which is haploid with one set of chromosomes per cell.http://en.wikipedia.org/wiki/Vascular_plants
What is the difference between sporophyte and gametophyte?
Sporophyte is the diploid (2n) stage in the life cycle of plants that produces spores through meiosis, while gametophyte is the haploid (n) stage that produces gametes through mitosis. Sporophyte generation is dominant in vascular plants, while gametophyte generation is dominant in non-vascular plants like mosses and liverworts.
Which stage in the alternation of generations life cycle would fern represent?
The Sporophyte life cycle is the dominant stage in Ferns (vascular non-seed plants)
What is pteridophyta give in detailed answer?
Pteridophyta is a plant division that includes ferns, horsetails, and clubmosses. These plants reproduce via spores and have vascular tissues for water and nutrient transport. They typically have a sporophyte-dominant life cycle, where the diploid sporophyte generation is the dominant phase in their life cycle.
What is a sporophyte?
The diploid generation in the life cycle of a plant, and that produces haploid spores by meiosis. A diploid form of a plant
Compare and contrast the nutritional needs of the gametophyte and the sporophyte of mosses and spore-bearing vascular plants and seed-bearing vascular plants?
The gametophyte of mosses and spore-bearing vascular plants require a moist environment for reproduction, while the sporophyte of seed-bearing vascular plants have evolved mechanisms for dispersal and protection of seeds. Both gametophytes and sporophytes require nutrients such as water, minerals, and sunlight for growth, but the specific nutritional requirements may vary depending on their reproductive strategies and life cycles. Overall, mosses and spore-bearing plants have simpler life cycles with more reliance on water for reproduction compared to seed-bearing vascular plants that have evolved more complex reproductive strategies for increased dispersal.
What trait do ferns have that mosses do not?
Mosses are non-vascular plants whereas ferns are vascular. In ferns Sporophyte is dominant but in mosses gametophyte is dominant generation. Ferns have definite roots but in mosses leaves and roots are mostly false.
One clear evolutionary trend in the vascular plants is the increasing dominance of what life cycle stage?
The sporophyte generation has shown increasing dominance in vascular plants. This shift is evident in the reduction of the gametophyte generation and the increasing complexity and size of the sporophyte generation over evolutionary time.
What plant group is characterized by dominant sporophyte vascular tissues and seeds exposed on cones?
The plant group characterized by dominant sporophyte vascular tissues and seeds exposed on cones is the gymnosperms. This group includes plants like conifers, cycads, and ginkgo trees. Gymnosperms do not produce flowers and their seeds are not enclosed within a fruit.
Is the sporophyte stage of a moss much larger than the gametophyte stage?
Ferns have a dominant sporophyte and a reduced gametophyte. As for moss, it depends on the type. If referring to mosses under the phylum Bryophyta (these are the nonvascular mosses) they have a dominant gametophyte. If referring to mosses under seedless vascular category, such as club mosses in the phylum Lycophyta, these plants have a dominant sporophyte and a reduced gametophyte.
