WebThey can be male plants, with antheridia at the top of the plant, or female plants, with archegonia at the top. Remember that these gametophytes are always haploid (1N) plants. Sperm are produced within eachantheridium, and an egg in each archegonium. Because the plant is already haploid, these gametes can be created by mitosis, WebHeterospory: The Rule Among Seed Plants Homo sporous plants produce one kind of spore, which usually produce a bisexual gametophyte Hetero sporous plants produce produce two types of spores, which develop into either male or female gametophytes Ferns and other close relatives are homosporous; seed are heterosporous Megasporangia …

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WebLower vascular plants, such as club mosses and ferns, are mostly homosporous (produce only one type of spore). In contrast, all seed plants, or spermatophytes, are heterosporous, forming two types of spores: megaspores (female) and microspores (male). Webc) homosporous v.s. heterosporous -homosporous plant produces single type spore that develop into single type gametophyte that bears both male and female reproductive organs-heterosporous plant produces two distinct types of spore-megaspore develops into larger female gametophyte (mega)-microspore develops into smaller male gametophyte (micro) er 図の説明のうち 適切なものはどれか

Are mosses and ferns heterosporous? - Studybuff

WebDiploid Most ferns are homosporous and produce one kind of spore (i.e., all spores look alike and grow into bisexual gametophytes). However, a few ferns are heterosporous - they produce two kinds of spores called megaspores and the microspores. Megaspores develop into female gametophytes while microspores develop into male gametophytes. WebWhat are the advantages and disadvantages of a space probe compared to a piloted spacecraft? WebMay 4, 2024 · Describe the characteristics of lycophytes. Differentiate between homosporous and heterosporous strobili. Lycopodiopsida, or lycophytes, have at least four genera and more than 1,200 … er図とは わかりやすく