Table of Contents
- 1 Which generation of the bryophytes is most conspicuous?
- 2 Which generation is more dominant in bryophytes?
- 3 Do bryophytes have alternation of generations?
- 4 Which are the pioneer structure of gametophyte generation of bryophytes?
- 5 What is the alternation of generation in bryophytes?
- 6 Why gametophyte generation is dominant in the life cycle of Bryophytes?
- 7 How is the sporophyte of a bryophyte dependent on the gametophyte?
- 8 Is the fossil record of the bryophyte improbable?
Which generation of the bryophytes is most conspicuous?
gametophyte generation
All bryophytes, i.e. liverworts, mosses and hornworts, have the gametophyte generation as the most conspicuous.
Which generation in the phylum bryophyta is the most conspicuous Why do you think this is so?
gametophyte
The sporophyte of bryophytes is dependent on the gametophyte for water and nutrients and in most cases conspicuous (as you can see in the image of Leucolepis acanthoneuron to the left).
Which generation is more dominant in bryophytes?
In bryophytes, such as mosses and liverworts, the gametophyte is the dominant life phase, whereas in angiosperms and gymnosperms the sporophyte is dominant.
Which group of bryophytes is the most advanced?
Anthoceropsida is best group in bryophytes and have highly evolved gametophyte and sporophyte.
Do bryophytes have alternation of generations?
The bryophytes show an alternation of generations between the independent gametophyte generation, which produces the sex organs and sperm and eggs, and the dependent sporophyte generation, which produces the spores.
Why is the gametophyte generation dominant in bryophytes?
The multicellular haploid plant structure is called the gametophyte, which is formed from the spore and give rise to the haploid gametes. In bryophytes (mosses and liverworts), the dominant generation is haploid, so that the gametophyte comprises what we think of as the main plant.
Which are the pioneer structure of gametophyte generation of bryophytes?
Haploid spore (n) is considered pioneer in gametophytic generation of bryophytes. These haploid pioneer structure of gametophytic generation are formed from spore mother cell by meiosis which in turn are produced within sporangium.
Are the pioneer structure of gametophyte generation of bryophytes?
Haploid spore (n) is considered pioneer in gametophytic generation of bryophytes. Protonema is the gametophytic structure developed from germination of spore and perichaetium is the name given to the leaves surrounding the archegonia.
What is the alternation of generation in bryophytes?
The bryophytes show an alternation of generations between the independent gametophyte generation, which produces the sex organs and sperm and eggs, and the dependent sporophyte generation, which produces the spores. The sporophyte releases spores, from which the gametophytes ultimately develop.
Are the pioneer structure of gametophyte generation of Bryophytes?
Why gametophyte generation is dominant in the life cycle of Bryophytes?
Bryophyte Generations The haploid stage, in which a multicellular haploid gametophyte develops from a spore and produces haploid gametes, is the dominant stage in the bryophyte life cycle. The mature gametophyte produces both male and female gametes, which join to form a diploid zygote.
Are the structure of gametophyte generation of a bryophytes?
Structures resembling stems, roots, and leaves are found on the gametophore of bryophytes, while these structures are found on the sporophytes in the vascular plants. The mature gametophyte of most mosses is leafy in appearance, but some liverworts and hornworts have a flattened gametophyte, called a thallus.
How is the sporophyte of a bryophyte dependent on the gametophyte?
The sporophyte of bryophytes is dependent on the gametophyte for water and nutrients and in most cases conspicuous (as you can see in the image of Leucolepis acanthoneuron to the left). Unlike the multisporangiate indeterminate sporophyte of the tracheophytes, bryophyte sporophytes are unisporangiate and determinate;
Where are bryophytes most likely to be found?
Bryophytes (mosses, hornworts, and liverworts) can be found in all ecosystems of earth. The diversity of bryophytes increases at tropical and subtropical latitudes. British Columbia has the highest bryophyte diversity in Canada so this is a wonderful place to study them.
Is the fossil record of the bryophyte improbable?
However, because they lack of lignin and other resistant structures, bryophyte fossil formation is improbable and the fossil record is poor. Some spores protected by sporopollenin have survived and are attributed to early bryophytes.
When did the first bryophytes plant appear on Earth?
Bryophytes are the group of seedles plants that are the closest-extant relative of early terrestrial plants. The first bryophytes (liverworts) probably appeared in the Ordovician period, about 450 million years ago.