Give a brief account of prothallus
WebVerb. 1. account - be the sole or primary factor in the existence, acquisition, supply, or disposal of something; "Passing grades account for half of the grades given in this exam". be - have the quality of being; (copula, used with an adjective or a predicate noun); "John is rich"; "This is not a good answer". 2. WebPteridophytes are plants that do not have any flowers or seeds. Hence another name for it is Cryptogams. They include ferns and horsetails. In fact, they can be considered as the first terrestrial vascular plants, showing the presence of the vascular tissue, xylem, and phloem. Mostly, we find these plants in damp and shady places.
Give a brief account of prothallus
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WebGive a brief account of prothallus. Ans. In pteridophytes, the spores germinate to give rise thallus like gametophyte is called prothallus. Prothallus is small, multicellular free living, mostly, photosynthetic. Botany-I 13. They require cool, damp, shady places to grow. Because of this specific ... WebDec 16, 2024 · Answer: The prothallus develops from a germinating spore. It is a short-lived and inconspicuous heart-shaped structure typically 2–5 millimeters wide, with a number of rhizoids (root-like hairs) growing underneath, and the sex organs: archegonium (female) and antheridium (male). Appearance varies quite a lot between species. Advertisement
WebAug 24, 2024 · Definition of prothallus 1: the gametophyte of a pteridophyte (such as a fern) that is typically a small flat green thallus attached to the soil by rhizoids 2: a greatly … WebProthallus of fern is flat green autotrophic heartshaped dorsiventral free living and independent nonvascular gametophyte In ferns it is attached to soil by rhizoids ... EASY. …
WebPteridophytes are plants that do not have any flowers or seeds. Hence another name for it is Cryptogams. They include ferns and horsetails. In fact, they can be considered as the … WebDec 28, 2024 · Each prothallus produces gametes via mitosis. Meiosis is not needed because the cells are already haploid. Often, a prothallus produces both sperm and eggs on the same plantlet. While the sporophyte consisted of fronds and rhizomes, the gametophyte has leaflets and rhizoids.
WebGive a brief account of prothallus. Ans. In pteridophytes, the spores germinate to give rise thallus like gametophyte is called prothallus. Prothallus is small, multicellular free living, mostly, photosynthetic. Botany-I 13. They require cool, damp, shady places to grow. Because of this specific requirement ...
WebThe microsporangia can produce enormous numbers of microspores—as many as 1,000,000—and the megasporangia give rise to 50 to 300 megaspores. The spores are … terminis cookiesterminis bakery reading terminalWebprothallus: [noun] the gametophyte of a pteridophyte (such as a fern) that is typically a small flat green thallus attached to the soil by rhizoids. tri city cabWebLet's Ask & Get Answers LOG IN SIGN UP. Physics Chemistry terminis bakery south phillyWebFeb 5, 2024 · Give brief account of each of them? (20) Ans: Meaning of Assessee: Assessee means a person by whom any tax or any other sum of money payable under the Act and include: i) Every person in respect of whom any proceeding has been initiated under the act for the assessment of his income or the income of any other person. These … termin ish 2023WebA Prothallus is a. A structure in pteridophytes formed before the thallus develops b. A sporophytic free-living structure formed in pteridophytes c. A gametophyte free-living structure formed in pteridophytes d. A primitive structure formed after fertilization in pteridophytes Solution: Option (c) is the answer. 6. terminis downhole servicesWebMar 8, 2016 · [ Thallus == a plant body not differentiated into stem, leaves, and roots and without a vascular system, typical of algae, fungi, lichens, and some liverworts]. They occur in a variety of other habitats: moist stones, soils and wood. Some of them also occur in association with fungi (lichen) and animals (e.g., on sloth bear ). tri city cab beverly ma