WitrynaA. fertilization occurs shortly after pollination to produce the zygote. B. the gametophyte generation is dominant and the sporophyte generation is inconspicuous. C. seed cones are smaller than pollen cones. D. seed cones are located near the tips of higher branches and pollen cones develop near the tips of lower branches. Witryna21 sty 2008 · A. brevifrons is less drought-resistant than other common ferns in North China (Wu et al., 2014). Its life cycle alternates between two generations, sporophyte generation and gametophyte ...
(PDF) Working with Ferns: Issues and Applications - ResearchGate
Witryna28 gru 2024 · Ferns alternate generations as part of their life cycle. mariaflaya/Getty Images. The fern life cycle requires two generations of plants to complete itself. This … WitrynaIn the early stages of growth, the sporophyte grows out of the prothallus, depending on it for water supply and nutrition, but develops into a new independent fern, which will produce new spores that will grow into new prothallia etc., thus completing the life cycle of the organism. Theoretical advantages of alternation of generations how many guns in switzerland
ALTERNATION OF GENERATIONS IN FERNS: MECHANISMS AND …
WitrynaAlternation of Generations. Pteridophytes, like many other plants, exhibit true alternation of generations. This means that a plant must complete two distinct generations in order to complete its life cycle. Sporophyte. The main generation is the sporophyte, which is the dominant phase. The sporophyte is the only generation that … Witryna26 mar 2024 · Thus, it is considered a living fossil. The spores are produced in the strobili through the process of sporangiogenesis. The sporophyte generation is visible to the naked eye while the … WitrynaThe alternation of generations is an important concept in the evolution of plants. All land plants have alternation of generations. In mosses and their relatives (Bryophytes), the haploid gametophyte is the dominant generation, and the diploid sporophytes are sporangium-bearing stalks growing from the gametophytes. In ferns, the diploid … how many guns in mw2