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What stage of the moss life cycle produces gametes?

What stage of the moss life cycle produces gametes?

gametophyte stage

What is Sporophyte generation?

In plants, the sporophyte generation is that phase in their life cycle that begins with the union of two single-celled haploid gametes. This union of haploid (n) gametes results in the formation of a single-celled diploid (2n) zygote. The zygote germinates and grows by going through a series of mitotic divisions.

What is a gametophyte generation?

Definition. noun. (botany) A phase in the life cycle of certain plants and algae that starts with a spore up to the time that gametes are produced.

What is the difference between gamete and Gametophyte?

The main difference between gamete and gametophyte is that gamete is a mature haploid male or female germ cell, which is able to unite with another of the opposite sex in sexual reproduction to form a zygote, whereas gametophyte is the haploid phase of the life cycle of a plant, producing gametes.

Are Megaspores haploid or diploid?

A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four haploid megaspores. At least one of the spores develop into haploid female gametophytes (megagametophytes).

What is an example of a gametophyte?

Examples of Gametophytes The fern you imagine when you think of Jurassic Park or a forest floor is a gametophyte. The graceful, fringed leaves are haploid – meaning they have only one set of chromosomes and produce sex cells through mitosis, like all gametophyte plants.

Is a sperm a haploid or diploid?

Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent). In humans, only their egg and sperm cells are haploid.

What is a Megagametophyte?

In angiosperms, the megagametophyte is the embryo sac. noun. 2. The female gametophyte that develops from the megaspores of heterosporous plants. Among heterosporous species of the lycophyte plants, for example, the sporophyte plant produces megaspores stocked with food.

Is called female gametophyte?

The female gametophyte is also commonly called the embryo sac or megagametophyte. The male gametophyte, also called the pollen grain or microgametophyte, develops within the anther and consists of two sperm cells encased within a vegetative cell (Gifford and Foster, 1989).

Are Sporophytes asexual?

Function of Sporophyte They have both sperm and eggs, but they can also reproduce tiny versions of themselves through spores. The spores are diploid cells containing genetic information about the plant itself, thus making it capable of asexual reproduction.

Where does Sporophyte grow and receive nutrients?

The sporophyte generation is dependent on the photosynthetic gametophyte for nutrition. Cells within the sporangium of the sporophyte undergo meiosis to produce male and female spores, respectively.

What is the first cell of female gametophyte?


What is Micro Sporogenesis?

[ mī′krə-spôr′ə-jĕn′ĭ-sĭs ] The formation of microspores inside the microsporangia (or pollen sacs) of seed plants. A diploid cell in the microsporangium, called a microsporocyte or a pollen mother cell, undergoes meiosis and gives rise to four haploid microspores.

What is female gametophyte in gymnosperms?

The female gametophyte of gymnosperms is a large and multicellular structure, and serves the double function of bearing the gametes as well as the nourishment of the developing embryo.

What is female gamete called?

Gametes are an organism’s reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm.

What is the ploidy of female gametophyte?

The female gametophyte is the female gamete. It is already known that gametes are haploid so the ploidy level of female gametophyte is n.