Protonema and leafy stage
WebbWhich of the following is true regarding the classes of Bryophytes? 1. The thallus of mosses is dorsiventral and closely appressed to the surface 2. In the life cycle of liverworts, the predominant gametophytic stage is divided into two stages - the protonema and the leafy stage 3. The sporophyte in liverworts is more elaborate than in mosses 4. Webb8 jan. 2024 · Protonema develops at the initiation of the moss development after the spore germination. Then through different sequential developments stages, the protonema develops into leafy …
Protonema and leafy stage
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WebbMoss is a gametophyte which consists of two stages namely, protonema stage and leafy stage. 0%. E Evolutionarily, pteridophytes are the first terrestrial plants to possess xylem and phloem. 0%. Solution: Correct answer is (a) Double fertilization is unique to gymnosperms and monocotyledons. All India Exams; NEET; JEE Main; JEE Advanced; … WebbWhen this fungus and other agarics attack the protonema, Sphagnum is induced to produce nonphotosynthetic gemmae that can survive the fungal attack and months later …
Webb19 mars 2015 · This is termed to be primary protonema.Protonema is a creeping, branched filamentous structure. b) Leafy stage: Primary protonema develops a lateral bud which is called as secondary protonema or a leafy stage. It is a bud formed as a tuft of leaves and has branched rhizoids to attach firmly to the substratum. Secondary protonema also … Webb20 dec. 2024 · Explanation: The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The first stage is the protonema stage, …
Webb29 mars 2024 · A protonema is a thread-like chain of cells that forms the gametophyte's earliest stage of growth in the life cycle of mosses. When a moss grows from a spore, it begins as a germ tube that lengthens and branches into a filamentous complex called a protonema, which develops into a leafy gametophore, the adult form of a gametophyte … Webb6 juni 2024 · Leafy stage develops from secondary protonema as a lateral bud. Protonema is creeping, green, branched frequently filamentous stage whereas leafy stage is upright …
WebbPlant kingdom. The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The first stage is the protonema stage, which develops directly from a spore. It is a creeping, green, branched and frequently filamentous stage. The second stage is the leafy stage, which develops from the secondary protonema as a …
Webb15 sep. 2024 · B. Leafy stage C. `2^(@)` protonema D. Both A and C. class-11; plant-kingdom; Share It On Facebook Twitter Email. 1 Answer. 0 votes . answered Sep 15, 2024 by BabitaRani (76.2k points) selected Sep 15, 2024 by KunalSharma . … lavitan 60+Webb1 Answer Muskan Anand 10 months ago The leafy stage develops from the secondary protonema as a lateral bud in mosses. Protonema is green creeping, branched frequently in the filamentous stage whereas leafy stage is upright with the spiral arrangement of the leaves. Recent Doubts lavitan 240mlWebbIn structure, the gametophyte is distinguished into protonema and leafy stage, forming the male and female sex organs at their tips. The female sex organs are known as archegonia. It functions by producing the ovum or female gamete and is protected by perichaetium modified leaves. The archegonia resemble the shape of a bottle container. lavitan 13 vitaminasWebbGametophytic stage is the predominant stage of the moss lifecycle. The Gametophytic stage consists of two stages (i). Protenema stage – this is the first stage which develops directly from a spore. (ii). Leafy stage – this is the second stage which develops from the secondary protonema as a lateral bud. lavitan 369WebbC. Embryo is the juvenile stage in the development of an organism. Both algae and bryophytes have embryonic stages. D. Algae do not have conducting tissues xylem and phloem but they have internal specialised conducting tissues whereas bryophytes have xylem and phloem as conducting tissues. lavitan anvisaWebb13 jan. 2024 · Reduction division in moss occurs similar to liverwort gametophyte which is a predominant stage hence haplodiplontic. It consists of 2 stages. The first stage is the protonema stage, which develops directly from. a spore. The second stage is the leafy stage which develops from secondary protonema as a lateral bud. This stage bears sex … lavitan 50 mulherWebbHence, the correct answer is option B, protonema of moss and prothallus of Dryopteris are gametophytic. Note: In all sexually reproducing plants, an alternation of generation is present between the gametophytic and sporophytic stages. What is leafy stage class 11? The leafy stage is developed from the secondary protonema as a lateral bud. lavitan homens