Does Pinus have motile gametes?

5. there are two non-motile male gametes in pinus, without any cilia, develop from generative cell.

What plants have motile 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?

In seed plants, male gametes are non motile.

Do mosses have motile or nonmotile gametes?

In the plants included in this article—bryophytes (mosses, hornworts, and liverworts) and tracheophytes (vascular plants)—sexual reproduction is of the oogamous type, or a modification thereof, in which the sex cells, or gametes, are of two types, a larger nonmotile egg and a smaller motile sperm.

Do plant gametes have flagella?

Flowering plant sperm differ from sperm of non- seed plants and of most animals in their lack of flagella.

In which plants male gametes are motile?

Anthoceros, Funaria and Spirogyra.

Which has motile male gametes?

Cycads are dioecious, with separate male and female plants, and fertilisation is effected by motile male gametes—so-called zooidogamous reproduction.

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Are male gametes of Pteridophytes motile?

Male gametes are motile and female non motile. … Reduction division takes place in the sporophyte before spore formation, whereas mitotic division produces the gametes. 8. There is no separate asexual reproduction by spores as noticed in Algae and Fungi.

Are male gametes always motile?

The smaller gamete is considered to be male (a sperm cell), whereas the larger gamete is regarded as female (typically an egg cell, if non-motile). There are several types of anisogamy. Both gametes may be flagellated and therefore motile. Alternatively, both of the gametes may be non-flagellated.

Are bryophytes motile or nonmotile?

Generally non-motile, with some exceptions for male gametes.

Are gymnosperms gametophyte or sporophyte dominant?

The life cycle of a gymnosperm involves alternation of generations, with a dominant sporophyte in which the female gametophyte resides, and reduced gametophytes. All gymnosperms are heterosporous. The male and female reproductive organs can form in cones or strobili.

Are bryophytes sporophyte dominant?

During the course of evolution, the sporophyte stage has become progressively increased. Thus, in the higher (i.e., vascular) plants the sporophyte is the dominant phase in the life cycle, whereas in the more primitive nonvascular plants (bryophytes) the gametophyte remains dominant.