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  2. Sporophyte - Wikipedia

    en.wikipedia.org/wiki/Sporophyte

    The sporophyte develops from the zygote produced when a haploid egg cell is fertilized by a haploid sperm and each sporophyte cell therefore has a double set of chromosomes, one set from each parent. All land plants , and most multicellular algae, have life cycles in which a multicellular diploid sporophyte phase alternates with a multicellular ...

  3. Sporophyll - Wikipedia

    en.wikipedia.org/wiki/Sporophyll

    In botany, a sporophyll is a leaf that bears sporangia. Both microphylls and megaphylls can be sporophylls. In heterosporous plants, sporophylls (whether they are microphylls or megaphylls) bear either megasporangia and thus are called megasporophylls , or microsporangia and are called microsporophylls .

  4. Alternation of generations - Wikipedia

    en.wikipedia.org/wiki/Alternation_of_generations

    In liverworts, mosses and hornworts, the dominant form is the haploid gametophyte. The diploid sporophyte is not capable of an independent existence, gaining most of its nutrition from the parent gametophyte, and having no chlorophyll when mature. [21] Sporophyte of Lomaria discolor, a fern ; Dominant sporophyte (sporophytic).

  5. Green algae - Wikipedia

    en.wikipedia.org/wiki/Green_algae

    The green algae (sg.: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae.

  6. Pteridophyte - Wikipedia

    en.wikipedia.org/wiki/Pteridophyte

    Pteridophytes (ferns and lycophytes) are free-sporing vascular plants that have a life cycle with alternating, free-living gametophyte and sporophyte phases that are independent at maturity. The body of the sporophyte is well differentiated into roots, stem and leaves. The root system is always adventitious. The stem is either underground or ...

  7. Spore - Wikipedia

    en.wikipedia.org/wiki/Spore

    The main difference between spores and seeds as dispersal units is that spores are unicellular, the first cell of a gametophyte, while seeds contain within them a developing embryo (the multicellular sporophyte of the next generation), produced by the fusion of the male gamete of the pollen tube with the female gamete formed by the ...

  8. Cladophora - Wikipedia

    en.wikipedia.org/wiki/Cladophora

    This occurs when the male and female gametes fuse, usually in water. The fusion of gametes results in the formation of a diploid zygote. The diploid zygote undergoes mitotic divisions to form a diploid sporophyte. The sporophyte phase is often short-lived and less conspicuous. It produces haploid spores through meiosis.

  9. Glossary of plant morphology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_plant_morphology

    A major difference between vascular and non-vascular plants is that in the latter the haploid gametophyte is the more visible and longer-lived stage. In vascular plants, the diploid sporophyte has evolved as the dominant and visible phase of the life cycle.

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