Are gametes of red algae motile?
Option B Red algae: Naturally red algae or Rhodophyceae have a thick and gelatinous cell wall. They lack flagella. The hormogonia of some species are able to move by gliding along surfaces. But, they are characterized by the absence of motile spores or gametes.
Is red algae non-motile?
The red algae generally are considered to have no motile stages. … Cells of unicellular species often displayed active movement although were otherwise indistinguishable from nearby immobile cells, and these may be equivalent to the motile spores released after differentiation in more complex multicellular species.
Do algae have motile gametes?
All Gametes Motile in some (not all) Algae
In some related species, sexual fusion is between larger and smaller motile cells, which may be called male and female; the female gametes may, as in the colonial genus Volvox, lose their flagella and become nonmotile, so becoming more like eggs.
Which algae reproduce by 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.
In which organisms gametes are non-motile How do they reach the female gametes for fertilization?
Angiosperms produce non-motile gametes. They reach the female gamete with the help of air or water.
Which of gametes are non-motile in nature?
The spermatozoon has a flagellum, which is a tail-shaped structure that allows the cell to propel and move. In contrast, each egg cell, or ovum, is relatively large and non-motile.
What are motile and non-motile gametes?
The larger gamete, or egg, is nonmotile; the smaller gamete, or sperm, is motile. The last type of gametic difference, egg and sperm, is often designated as oogamy. In oogamous reproduction, the union of sperm and egg is called fertilization.
Is female gamete is motile or nonmotile?
Oogamy: in humans and mammals, one of the gametes, male gamete or sperm, is motile and the other gamete, egg, or female gamete is non-motile. This condition is known as oogamy, wherein a large non-motile egg is fertilized or will fuse with a small and motile sperm to form the zygote.
Are male gametes non-motile in bryophytes?
As angiosperms and gymnosperm have non motile male gamete while algae, bryo do have motile..