Pollination takes place at 4-celled stage in pinus, i.e. two prothallial cells, a generative cell and a tube cell. … there are two non-motile male gametes in pinus, without any cilia, develop from generative cell.
Does Pinus have motile gametes?
by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. Because pollen tube is present and dispersal of pollen grains by wind. So male gametes are not cillate.
Question : Non-motile male gametes are formed in.
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Which plants produce motile male gametes?
While absent from flowering and most cone-bearing plants, motile cells are found in less derived taxa, including bryophytes (mosses, liverworts and hornworts), pteridophytes (lycophytes and ferns) and some seed plants (Ginkgo and cycads). …
Do gymnosperms have motile male gametes?
As angiosperms and gymnosperm have non motile male gamete while algae, bryo do have motile..
In which plant male gametes are non motile?
The non-motile male gamete in plants is known as pollen.
Is male gamete motile?
The non-flagellated male gamete is free and vigorously motile, propelled by pseudopodia.
Are male gametes of marchantia motile?
stationary in all, except. (1) Sweet potato (2) Marchantia. Male gamete is motile and female gamete is stationary in most of the organisms. …
Does Pinus have motile sperm?
5. there are two non-motile male gametes in pinus, without any cilia, develop from generative cell.
Are male gametes of Pteridophytes motile?
Bryophytes and Pteridophytes require water for fertilization and have motile male gametes.
Which gamete is motile?
Each sperm cell, or spermatozoon, is small and motile. 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.
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.
Does Wolffia produce motile male gametes?
pollen grain is the carrier of non-motile gamete in  Riccia  cycas  wolffia  Pteris … Cycas belongs to gymnosperms. These are seed bearing plants and produce non motile gametes. The pollen grain acts as carrier of non motile male gamete and transfers it to the female flower for fertilisation to take place.
Which algae has non-motile gametes?
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.
Why are only male gametes motile?
Question 41. Why do only male gametes have a tail? Because sperm need to be motile to reach the non-motile egg in the ovary of the female.
Does Salvinia motile male gametes?
They all have motile male gametes.