Why is the sporophyte dependent on gametophyte?

Why is the sporophyte dependent on gametophyte?

The sporophyte structure is dependent upon the gametophyte of nourishment because only the gametophyte is capable of photosynthesis. The gametophyte generation in these organisms consists of the green, leafy or moss-like vegetation located at the base of the plant.

What is the relationship between gametophyte and sporophyte?

The mature gametophyte produces both male and female gametes, which join to form a diploid zygote. The zygote develops into the diploid sporophyte, which extends from the gametophyte and produces haploid spores through meiosis. Once the spores germinate, they produce new gametophyte plants and the cycle continues.

How the fern sporophyte is dependent upon the gametophyte?

The sporophyte is dependent upon the female gametophyte for water and nutrients. After fertilization, the zygote develops into a sporophyte. Only one sporophyte grows on the gametophyte. The early embryonic sporophyte is dependent upon the gametophyte for nutrients and nourishment.

How is the sporophyte stage of a bryophyte dependent on the gametophyte stage?

In a bryophyte, all the vegetative organs belong to the gametophyte, which is the dominant and most familiar form; the sporophyte appears for only a short period. The sporophyte is dependent on the gametophyte and remains permanently attached to it in order to gain nutrition and protection.

Why is sporophyte generation dominant?

The gametophyte then makes gametes that fuse and grow into a sporophyte. In many plants, the sporophyte generation is the dominant generation. This means that the sporophyte is larger and lives longer than the gametophyte generation.

What happens in the sporophyte stage?

In the sporophyte phase a diploid (having two sets of chromosomes) plant body grows and eventually produces spores through meiosis. These spores divide mitotically to produce haploid (having a single set of chromosomes) gamete-producing bodies called gametophytes.

What is the gametophyte stage and sporophyte stage?

Fusion of the male and females gametes forms the diploid zygote, which develops into the sporophyte. After reaching maturity, the diploid sporophyte produces spores by meiosis, which in turn divide by mitosis to produce the haploid gametophyte. The new gametophyte produces gametes, and the cycle continues.

Is sporophyte dependent on gametophyte in bryophytes?

The bryophytes show an alternation of generations between the independent gametophyte generation, which produces the sex organs and sperm and eggs, and the dependent sporophyte generation, which produces the spores. In most vascular plants, however, the gametophyte is dependent on the sporophyte.

Why is the sporophyte generation dominant?

It produces haploid spores that develop into a gametophyte. The gametophyte then makes gametes that fuse and grow into a sporophyte. In many plants, the sporophyte generation is the dominant generation. This means that the sporophyte is larger and lives longer than the gametophyte generation.

How do the sporophyte stage and gametophyte stage make a cycle?

In which group gametophyte is dependent on sporophyte?

Bryophytes (mosses, liverworts and hornworts) have a dominant gametophyte phase on which the adult sporophyte is dependent for nutrition.

In which of the following does the sporophyte depend on the gametophyte for nutrition?

Bryophytes (mosses, liverworts and hornworts) have a dominant gametophyte phase on which the adult sporophyte is dependent for nutrition. The embryo sporophyte develops by cell division of the zygote within the female sex organ or archegonium, and in its early development is therefore nurtured by the gametophyte.

Why is gametophyte dominant in bryophytes?

Bryophytes, which are considered to have a more ancestral form, have a life cycle in which the gametophyte is dominant. This means that when you see a moss plant, you are seeing the gametophyte. The sporophytes that they produce are very small, are attached to, the gametphyte and rely entirely on it for their energy and nutrition.

Why is the sporophyte phase diploid?

Sporophyte represents the diploid phase (2N) due to the formation of zygote , while gametophyte represents the haploid phase (N) due to the occurrence of meiosis. Therefore, this is the key difference between sporophyte and gametophyte. Besides, the sporophyte phase produces haploid spores, while the gametophyte phase produces male and female

Is sporophyte dominant is mosses?

In mosses, the gametophyte is the dominant generation, while the sporophytes consist of sporangium-bearing stalks growing from the tips of the gametophytes A sporophyte ( / spɔːroʊˌfaɪt /) is the diploid multicellular stage in the life cycle of a plant or alga.

What are some examples of a sporophyte dominant plant?

The definition of a sporophyte is a mature phase in the life cycle of plants and some algae that produce spores. An example of sporophyte is a mature fern plant . The diploid spore-producing phase in the life cycle of a plant that exhibits alternation of generations. It is the dominant stage in vascular plants.