have chlorophyll a and c. unicellular or colonial, usually asexual. Most of the pteridophytes are homosporous. 1. Red algae. A. Algae increase the level of dissolved oxygen in 10 the immediate environment B. Algin is obtained from red algae and carrageenan from brown algae . Homosporous process. A spore is capable of reproducing and growing into a new organism or plant without . Brown algae. Filamentous 2. Red algae are grouped under the class Rhodophyceae. (B) In angiosperms, the seeds are enclosed by fruits. Furthermore, red and brown algae are mainly marine . Ferns can be either homosporous or heterosporous.! 1. . (A) Angiosperms range in size from microscopic Wolfia to tall trees of Eucalyptus. 1. 2. 6 min read. Today's club mosses are diminutive, evergreen plants consisting of a stem (which may be branched) and microphylls ( Figure ). Most of the pteridophytes are homosporous, produce isospores [] That is, the . Homosporous pteridophytes are vascular plants which produce only one type of spores that are same in size. Flagellated gametes 4. 1.Red algae are grouped under the class Rhodophyceae. It develops sex organs that produce gametes, haploid sex cells that . Plants that possess spores and embryo but lack vascular tissues and seeds? Solution For Differentiate between the following: (i) Red algae and brown algae(ii) Liverworts and moss(iii) Homosporous and heterosporous pteridophyt . 12-In some pteridophytes the sporangia developed on stems, axis between leaf and stem, on leaves (mostly ventral surface of leaves). Plants that are homosporous produce spores of the same size and type. Non-vascular plants are homosporous, and the gametophyte is the dominant generation in the life cycle. Ferns are mostly homosporous, though some are heterosporous. Haploid dominant Representative chlorophytes 1. 1 Right Answer is: SOLUTION (i) Red algae and brown algae Red algae Brown alg ae 1. Homosporous gametophytes must balance their allocation to the competing demands of male (sperm) and female (egg) functions. Phylum Chlorophyta - green algae (Chara, Chlamydomonas, Spirogyra, Volvox) Bryophytes (no vascular tissue) Phylum Bryophyta - mosses (Mnium, Sphagnum) Phylum Hepaticophyta - liverworts (Marchantia, Porella) Phylum Anthocerophyta (or Anthocerotophyta)- hornworts (Anthoceros) Terms. Differentiate between the following: (i) Red algae and Brown algae (ii) Liverworts and Moss (iii) homosporous and heterosporous pteridophyte asked Feb 2, 2020 in Biology by Ritik01 ( 48.1k points) plant kingdom Question 6. They produce unisexual gametophytes. Log in. Gemma cell in Marchantia 6. asked Jan 30 in Biology by AnokhiKumari (25.0k points) class-12; plantae; 0 votes. Taxa 1 of green algae that: 1. are the basis of many food webs 2. are split into chlamydomonas, spirogyra, volvox and ulva Chlamydomonas Chlorophyte 1. Heterosporous also has two different types that are small male spore and big female spore. They occur in a variety of other habitats: moist stones, soils and wood. The spores germinate into a tiny green thread, which looks like a simple strand of green algae. Red algae and Brown algae (ii) Liverworts and Moss (iii) homosporous and heterosporous pteridophyte. A plant that has seeds but no flowers and fruits? T hey contain floridea n starch as 2. They bear spores that are of the same type. Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syn. In heterosporous genera the differentiation observed during sporogenesis, in sporophyte stage. The spores germinate into a tiny green thread, which looks like a simple strand of green algae. asked Nov 25, 2020 in Biology by Panna01 (47.3k points) plant kingdom . Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion . 1. Isogamous 3. Please scroll down to see the correct answer and solution guide. At least half of the total carbon-dioxide fixation on earth is carried out by algal through photosynthesis. Differentiate between the following: (i) Red algae and Brown algae (ii) Liverworts and Moss (iii) homosporous and heterosporous pteridophyte asked Feb 2, 2020 in Biology by Ritik01 ( 48.1k points) plant kingdom Explain your answer. 3. Briefly describe the life cycle of any one of them. Algae are chlorophyll-bearing, simple, thalloid, autotrophic and largely aquatic (both fresh water and marine) organisms. They bear two kinds of spores - microspores and megaspores. (D) In angiosperms, each cell of an embryo sac is diploid. Lycopodium and Equisetum are homosporous pteridophytes i.e. 11-Plants may be homosporous (all spores are same in shape and size) and heterosporous (spores are two different shape and size) smaller called microspore and larger called megaspore. . Homosporous plants produce only one kind of spore, which will form a bisexual . (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion Solution: Following are the differences: i) 1. The heterosporous state is a more advanced condition, that seems to have evolved independently in . Genera like Selaginella and Salvinia which produce two kinds of spores, macro (large) and micro (small) spores, are known as heterosporous pteridophytes. The gametophyte is the sexual phase in the life cycle of plants and algae. Phylum Polypodiophyta" ferns! Chiorophyceae contains chlorophyll a and b, giving it the green colourand the name 'green algae'. 2. The main difference between red brown and green algae is that red algae contain chlorophyll a, chlorophyll d, and phycoerythrin, while brown algae contain chlorophyll a, chlorophyll c, and fucoxanthin and green algae contain chlorophyll a, chlorophyll b, and xanthophylls. T hey contain the pho tosynthetic 3. Lycopodiaceae - club mosses! Differentiate between green algae, brown algae and red algae in respect of pigments and reserve food material. (b) Oogamous and heterosporous. View BIO2181_MultipleChoiceInterpretation.pdf from BIO 2181 at Monash University. Evidences 5. The evolutionary transition from water to land imposed severe constraints on plants. Various green algal groups have been proposed for this ancestral type, with the Charophytes often being prominently mentioned. asked . A generalized homosporous plant life cycle is shown in Figure 5. Current evolutionary thought holds that all plantsgreen algae as well as land dwellersare monophyletic; that is, they are descendants of a single common ancestor. . Which plant kingdom can survive both on land and in the water? Red algae and brown algae(ii) Liverworts and moss(iii) Homosporous and heterosporous pteridophyt. Comparing Angiosperm and Gymnosperm Reproduction. The spores of homosporous plants, such as horsetails and most ferns, grow into bisexual gametophytes . Point out any one common character found in heterospory and seed habit. 2n. Understand how the structure of a gymnosperm leaf is adapted for terrestrial habitats. 1.Red algae are grouped under the class Rhodophyceae. . Homosporous pteridophytes. Phylum Ochrista - chloroplasts have 3 membranes and degenerate nucleus indicating recent endosymbiosis. 2. Heterosporous pteridophytes:-1. 1. Question 11. Join now. Meristem cell of a monocot 7. 2. Home. horsetails (equisetpophytes) and some lycophytes Homosporous plants produce only one kind of spore, whereas heterosporous plants . They produce bisexual gametophytes. In bryophytes and pteridophytes, transport of male gametes requires-A. If red algae is reserving [] 4. The reproductive cell, organ or structure of a fungi, non-flowering plant and algae is called a spore. Prokaryotic blue-green and eukaryotic green algae may have formed algal mats, simple soil ecosystems developing even in the Proterozoic, but that was the extent of early land colonization by "plants" (references in Nelsen et al. ferns are homosporous. Homosporous pteridophytes. Algae . Differentiate between the following:-(i) red algae and brown algae(ii) liverworts and moss(iii) homosporous an Get the answers you need, now! Both homosporous and heterosporous plants are found in the group. Kingdom Chromista - aquatic uni-or multicellular photosynthetic organisms. T hey contain manni tol stored food. The gametophyte is the sexual phase in the life cycle of plants and algae. Most primitive vascular plants? 1. Some algae are used as fertilizer and some blue-green algae are capable of converting clay soil into cultivable land. 2. Haploid dominant Spirogyra Chlorophyte 1. Homosporous plants . There is major disagreement on what are the fern families, but 30 are generally . Primary endosperm nucleus in dicot 3. 1. . Micrsporangia, microspores, gametophyte, sperm. n. Heterosporous process. They bear spores that are of the same type. Red algae are groupe d under the class 1. . . Selaginella is a type of plant. Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion . Current evolutionary thought holds that all plantsgreen algae as well as land dwellersare monophyletic; that is, they are descendants of a single common ancestor. Biology. The heterosporous state is a more advanced condition, that seems to have evolved independently in . Plants that produce two types of spores are called heterosporous. 2. Today, seedless plants represent only a small fraction of the plants in our environment; yet, 300 million years ago, seedless plants dominated the landscape and grew in the enormous swampy forests of the Carboniferous period. Homosporous: Heterosporous pteridophyte (a) all spores produced of similar kinds: . . Most pteridophytes are homosporous but there are exceptions. History of Heterospory: Pteridophytes are the first true land plants. In homosporous genera the sex determination is observed in gametophyte stage, during the formation of antheridia and archegonia. 1. Phylum Polypodiophyta! 1. (iii)homosporous and heterosporous pteridophyte (iv)syngamy and triple fusion. . Being the first successful colonisers in land habit pteridophytes show both the homospory and heterospory. Incipience of Heterospory 3. We have step-by-step solutions for your textbooks written by Bartleby experts! They produce bisexual gametophytes. Birds B. 2. Brown algae. Gymnosperms. The spore cannot be differentiated as male or female in homosporous pteridophytes. The club mosses, or phylum Lycopodiophyta, are the earliest group of seedless vascular plants. View Solution Mention the ploidy of the following: 1. Lycopodiophyta [also called Lycophyta] Mosses are heterosporous, which means they make two distinct types of spores; . . bryophytes; rhizoids (c) Isogamous & heterosporous. asked Feb 2, 2020 in Biology by Ritik01 (48.2k points) plant . . Textbook solution for Biological Science (6th Edition) 6th Edition Scott Freeman Chapter 28 Problem 8TYU. 1 answer. Some of them also occur in association with fungi (lichen) and animals (e.g., on sloth bear). The evolutionary transition from water to land imposed severe constraints on plants. Tags: Class 11 , Biology , Plant Kingdom Asked by Kriti Kumari Origin 4. Prothallus cell of a fern 5. c) Heterosporous. 2019). Which groups of green plants (viridophytes) require liquid environmental water for sperm to reach eggs Algae and Lower Plants. In case of Selaginella the development of microsporangium and megasporangium is same upto the development of spore mother . (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion om dicots? Leaf cell of a moss 4. Isogamous 3. 2. Single-celled 2. In heterosporous pteridophytes, spores germinate within the sporangium and the gametophytes are retained inside for variable periods of time.