Ulothrix reproduces vegetatively by fragmentation, asexually by nonmotile resting spores (aplanospores) and motile quadriflagellate spores (zoospores), and sexually by biflagellate gametes. …
Does Ulothrix have motile male gametes?
The gametes that undergo fusion can be flagellated and similar in size (as in Ulothrix) or non-flagellated (non-motile) but similar in size (as in Spirogyra). This type of reproduction is called isogamous. The fusion of two gametes that are dissimilar in size, as in the species of Eudorina, is known as anisogamous.
Does sphagnum produce motile male gametes?
It is a gymnosperm. The gymnosperms do have non-motile male gametes. … They don’t have any motile structures attached. On the other hand, the sphagnum is a bryophyte.
Is Spirogyra is non-motile?
In Spirogyra, gametes are non-motile and sexual reproduction takes place by conjugation. ( Sargassum belongs to Phaeophyceae group of algae. They are commonly called as ‘brown algae’ and contain photosynthetic pigments chlorophyll a and c.
In which algae gametes are non-motile?
Option A Blue green algae: Blue green algae or Cyanophyceae reproduce through simple division or fragmentation or non-motile spores. Also, they do not reveal any motile phase during the life cycle.
Does Ulothrix contain flagella?
Hint: Ulothrix is a non-branching filamentous green algae. It is generally found in marine and freshwater. The mode of reproduction of Ulothrix is by both asexual method and sexual method. They produce two flagella gametes.
Is Ulothrix a colony?
Ulothrix is categorized as a genus of non-branching filamentous green algae, normally found in fresh and marine water. They attach to the surfaces by a modified holdfast cell and its reproduction is normally vegetative. … It makes spherical colonies having up to 50,000 cells.
Which has motile male gametes?
[Abstract] Motile male gametes (spermatozoids) of land plants are coiled and contain a modified and precisely organized complement of organelles that includes a locomotory apparatus with two to thousands of flagella.
Which plants produce non-motile male gametes?
The male and female gametes are produced by flowers. Flowers mainly have petals, sepals, stamen, and pistil. Stamen is the male reproductive part and has anther and filament. The anther produces and stores the pollen which is the male gamete and is non-motile.
In which plants non-motile male gametes?
The non-motile male gamete in plants is known as pollen.
Is Ulothrix motile or nonmotile?
Ulothrix reproduces vegetatively by fragmentation, asexually by nonmotile resting spores (aplanospores) and motile quadriflagellate spores (zoospores), and sexually by biflagellate gametes. Ulothrix (highly magnified), a type of filamentous green algae.
Is Ulothrix flagellated or non-flagellated?
(d) Ulothrix is a freshwater, filamentous green algae, found in rather cold flowing water, Sexual reproduction in Ulothrix is isogamous type, i.e. it takes place between two morphological similar motile, flagellated male and female gametes which come from different filaments.
Does Cladophora have motile male gametes?
Cladophora is an example of algae that produces motile homogametes. Male and female gametes have similar morphology. Volvox and Fucus are examples of oogamous reproduction, where the female gamete is large, non-motile and the male gamete is small, motile.
Which algae produce non-motile spores and non-motile gametes?
Members of Rhodophyceae lack motile cells in their lifecycle. They reproduce asexually by non-motile spores and sexually by non-motile gametes.
What are non-motile gametes?
Non motile gametes are produced during sexual reproduction in oogamy process. Oogamy is a form of sexual reproduction. It is a form of anisogamy in which the female gamete is larger than the male gamete and is non-motile.
Which algae reproduce asexually by non-motile?
The red algae usually reproduce vegetatively by fragmentation. They reproduce asexually by non-motile spores and sexually by non-motile gametes.