WebbSolution for Place the following structures of a fern in the correct order of its lifecycle following the fiddlehead: frond, gametes, prothallus, spore, zygote. WebbProthallus is the free-living, multicellular, inconspicuous, haploid, photosynthetic, thalloid gametophyte of pteridophytes. It bears unicellular rhizoids for attachment to substratum. The requirement for damp and moist places is due to the requirement of water for fertilisation. Suggest Corrections 0 Similar questions Q.
Find correct statement for the prothallus of fern - Toppr
Webb7 okt. 2024 · Phylum Pteridophyta includes ferns which are seedless vascular plants. Ferns have sporophyte as the main plant body with a rhizome, fronds (the leaves) and true roots. On the other hand, the gametophyte (prothallus) in ferns is a tiny and green structure that grows at the surface of the ground. Webb6 apr. 2024 · Hint: A prothallus, the word ‘pro’ means forwards and ‘thallus’ means twig. It is usually the gametophyte stage in the life of a fern or other pteridophyte. The prothallus … eaアカウント 確認
Prothallus - Wikipedia
WebbThe fern gametophyte is a small (approximately 5 mm), bisexual, heart-shaped plant called a prothallus. The prothallus is haploid, since it grew from a spore which had been formed by meiosis. It does not have any vascular tissue and uses small rhizoids to anchor it to the ground. On the underside of the prothallus the sex organs form. Webb10 nov. 2024 · Thus, we have 46 chromosomes in most of our cells, but only 23 in our gametes. It is the process of meiosis that ensures that these chromosome pairs separate correctly. However, although meiosis produces gametes in animals, it produces spores in plants. The spores then grow into an organism (the gametophyte) with half the number … WebbFerns are seedless plants. Ferns lack lignified vascular tissues. The sporophyte generation of ferns is the dominant phase in their life cycle. Question 3. 120 seconds. Q. Ferns produce clusters of sporangia known as ________ on the underside of the sporophylls. answer choices. sori. ea アカウント 統合