(d) Isogamous & Homosporous. View BIO2181_MultipleChoiceInterpretation.pdf from BIO 2181 at Monash University. Heterosporous pteridophytes:-1. Biology. 2. Red algae are grouped under the class Rhodophyceae. Explain your answer. . Protonemal cell of a moss 2. 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. T hey contain manni tol stored food. 2. They produce bisexual gametophytes. Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syn. (iii) Homosporous and heterosporous pteridophyte Homosporous pteridophytes Heterosporous pteridophytes 1. (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion om dicots? Algae are classified into three main classes - Chlorophyceae, Phaeophyceae, and Rhodophyceae based on the following factors: (a) Major photosynthetic pigment present . Right Answer is: SOLUTION (i) Red algae and brown algae Red algae Brown alg ae 1. by Lakna. (iv) Syngamy and triple fusion Syngamy Triple fusion 1. Differentiate between the following:-(i) red algae and brown algae(ii) liverworts and moss(iii) homosporous an… Get the answers you need, now! Evidences 5. 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 1. (B) In angiosperms, the seeds are enclosed by fruits. 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. Log in. Homosporous pteridophytes. They produce bisexual gametophytes. Ploidy number of spores. Comparing Angiosperm and Gymnosperm Reproduction. . Read the following statements and identify the correct options given. 2019). . Heterosporous pteridophytes. Current evolutionary thought holds that all . They bear spores that are of the same type. Understand how the structure of a gymnosperm leaf is adapted for terrestrial habitats. Haploid dominant Representative chlorophytes 1. Various green algal groups have been proposed for this ancestral type, with the Charophytes often being prominently mentioned. 1. Sporangia houses spores, develop into bisexual gametophyte (egg or sperm) What does xylem transport and in what direction. Answer: (d) Green Algae. Differentiate between green algae, brown algae and red algae in respect of pigments and reserve food material. Tags: Class 11 , Biology , Plant Kingdom Asked by Kriti Kumari c) Heterosporous. Red algae are groupe d under the class 1. Please scroll down to see the correct answer and solution guide. The spores of homosporous plants, such as horsetails and most ferns, grow into bisexual gametophytes . On the stem sporangia may be Homosporous process. Question 11. Single-celled 2. It develops sex organs that produce gametes, haploid sex cells that participate in fertilization to form a diploid zygote which has two sets of chromosomes. Hence, germinating gametophyte has better chances of survival. Homosporous: "same spore" - one kind of spore produced; cones terete (rounded)! 2.They contain floridean starch as stored food. The club mosses, or phylum Lycopodiophyta, are the earliest group of seedless vascular plants. A spore is capable of reproducing and growing into a new organism or plant without . 3. 2. Most pteridophytes are homosporous but there are exceptions. Phylogenetic system of classification is based on (a) morphological features (b) chemical constituents (c) floral characters (d) evolutionary relationships. Plants that produce two types of spores are called heterosporous. Current evolutionary thought holds that all plants—green algae as well as land dwellers—are monophyletic; that is, they are descendants of a single common ancestor. They bear spores that are of the same type. 1. Understand the advantages of seeds and pollen for terrestrial life. (b) Oogamous and heterosporous. (C) Double fertilisation is an event unique to angiosperms. Two flagella 4. PLANT KINGDOM ALGAE Phaeophyceae Class: Food is stored as laminarin or mannitol Algin coating over cellulosic cell wall Body . Brown algae. 1. . Answer. So the correct answer is option D. Plant Kingdom. 3. At least half of the total carbon-dioxide fixation on earth is carried out by algal through photosynthesis. bryophytes; rhizoids Fossil and biochemical evidence indicates plants are descended from multicellular green algae. They bear two kinds of spores - microspores and megaspores. 1 They contain floridean starch as stored food. It develops sex organs that produce gametes, haploid sex cells that . Red algae. b) 'Heterospory is a precursor to seed habit'. Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion . Homosporous plants . They produce unisexual gametophytes. Among the Plantae, the gametophytes and sporophytes of a species have distinct morphologies (in some algae they look alike). Some of them also occur in association with fungi (lichen) and animals (e.g., on sloth bear). 2. In case of Selaginella the development of microsporangium and megasporangium is same upto the development of spore mother . have chlorophyll a and c. unicellular or colonial, usually asexual. Most primitive vascular plants? In heterosporous pteridophytes, spores germinate within the sporangium and the gametophytes are retained inside for variable periods of time. 1. . Tags: Class 11 , Biology , Plant Kingdom Asked by Kriti Kumari Answer: a) Selaginella, Salvinia, Marsilea etc. This similarity is one more clue that bryophytes are descended from green algae. 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. 1. asked Jan 30 in Biology by AnokhiKumari (25.0k points) class-12; plantae; 0 votes. 4.Their cell walls are composed of cellulose, pectin, and phycocolloids. Their decomposition created large deposits of coal that we mine today. 4. Leaf cell of a moss 4. (sometimes referred to as isospory). Know the life cycle of gymnosperms. 2. Ferns are mostly homosporous, though some are heterosporous. (IV) Medicinal use: An antibiotic Chlorellin is extracted from Chlorella. (iv) Syngamy and triple fusion:-Syngamy:-1. homosporous and heterosporous life cycles differ. In red algae, Phycobilins are present but brown algae do not have phycobilins. . Selaginella is a type of plant. The given diagrams shown:- (1) An alga that lacks flagellated cells (2) A liverwort (3) A heterosporous pteridophyte (4) A gymnosperm with non motile sperms Plant Kingdom Botany Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions, explanations, NCERT reference . Origin 4. Red algae contain chlorophyll a and chlorophyll d but brown algae contain chlorophyll a and c. 2. They bear spores that are of the same type. 2n. Following are the differences: i) 1. . Gemma cell in Marchantia 6. How a single genome can be used to create two unique morphologies is an intriguing puzzle. 1.Red algae are grouped under the class Rhodophyceae. 6 The difference between a homosporous and heterosporous life cycle is that 7 The structure in the liverwort sporophyte associated with spore dispersal is the 8 A common feature of the non-vascular bryophytes, non-seed vascular, and some groups (gymnosperms) of the seed-producing vascular plants is that They bear spores that are of the same type. Red algae and Brown algae (ii) Liverworts and Moss (iii) homosporous and heterosporous pteridophyte. Ferns can be either homosporous or heterosporous.! n. Heterosporous process. Red algae. Lycopodium and Equisetum are homosporous pteridophytes i.e. It has 30-35% proteins, 40-45% carbohydrates and a very high percentage of vitamins. Red algae and brown algae (ii)Homosporous and heterosporous pteridophytes (iii)Liverworts and moss (iv)Syngamy and triple fusion. brown algae. 3. Homospory results in gametophytes that have both male and female function, and thus intragametophytic self-fertilization is usually possible, with a result that the offspring sporophyte will be completely homozygous. 1. . 2. Which groups of green plants (viridophytes) require liquid environmental water for sperm to reach eggs 1. These plants produce one type of sporangium bearing the spores. Plants that are homosporous produce spores of the same size and type. Algae which have food conducting tubes similar to phloem in vascular plants are (a) Red algae (b) Brown algae (c) Blue green algae (d) Green algae Answer Question 14. If red algae is reserving […] Class 11. 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 Algae . Prophyra. View Solution Mention the ploidy of the following: 1. Today's club mosses are diminutive, evergreen plants consisting of a stem (which may be branched) and microphylls ( Figure ). In heterosporous genera the differentiation observed during sporogenesis, in sporophyte stage. Heterosporous, Homosporous, Bisporangiate, Zooidogamy, Entomophily, Siphonogamy, Roots with My. Plants that produce only one type of spore are called homosporous and the resultant gametophyte produces both male and female gametes, usually on the same individual. horsetails (equisetpophytes) and some lycophytes Homosporous plants produce only one kind of spore, whereas heterosporous plants . Red algae and brown algae(ii) Liverworts and moss(iii) Homosporous and heterosporous pteridophyt. 2. Homosporous pteridophytes. Haploid dominant Spirogyra Chlorophyte 1. Question 6. Homosporous: Heterosporous pteridophyte (a) all spores produced of similar kinds: . 2. Both homosporous and heterosporous plants are found in the group. 2. 2. Most of the pteridophytes are homosporous. Advantages. 1. asked Nov 25, 2020 in Biology by Panna01 (47.3k points) plant kingdom . There are also some cultivated ferns and a few invasive ferns. Porphyra is a cold water seaweed that grows in cold, shallow seawater. D. Gymnosperms are both homosporous and heterosporous. Brown algae are gro uped under the Rhodophyceae. (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion Solution: Following are the differences: i) 1. They produce unisexual gametophytes. Being the first successful colonisers in land habit pteridophytes show both the homospory and heterospory. 2. Water upward. Primary endosperm nucleus in dicot 3. The spore contains both the male and female. They produce bisexual gametophytes. The spores germinate into a tiny green thread, which looks like a simple strand of green algae. Log in. They bear two kinds of spores - microspores and megaspores. View all They are non-vascular plants with a prominent gametophyte. They contain mannitol or laminarin as stored food. 1 answer. Phylum Polypodiophyta! . Textbook solution for Biological Science (6th Edition) 6th Edition Scott Freeman Chapter 28 Problem 8TYU. •Homosporous plants produce only one kind of spore, which will form a bisexual . Plants that possess spores and embryo but lack vascular tissues and seeds? The reproductive cell, organ or structure of a fungi, non-flowering plant and algae is called a spore. Differentiate between the following-i red algae and brown algaeii liverworts and mossiiihomosporous and heterosporous pteridophyteivsyngamy and triple fusio. (iii) homosporous and heterosporous pteridophyte Homosporous pteridophyte Heterosporous pteridophyte They bear spores that are of the same type. •The origin is a Chara- or Coleochaete-like green algae •Similar life cycle: alternation of heteromorphic generations . . Isogamous 3. Heterosporous plants, such as seed plants , spikemosses , quillworts , and ferns of the order Salviniales produce spores of two different sizes: the larger spore (megaspore) in effect functioning as a "female" spore and the smaller (microspore) functioning as a "male". The heterosporous state is a more advanced condition, that seems to have evolved independently in . . They bear two kinds of spores - microspores and megaspores. Prothallus cell of a fern 5. T hey contain the pho tosynthetic 3. The spore cannot be differentiated as male or female in homosporous pteridophytes. Brown algae. 6 min read. Know general features of gymnosperms. Which plant kingdom can survive both on land and in the water? 144. Genera like Selaginella and Salvinia which produce two kinds of spores, macro (large) and micro (small) spores, are known as heterosporous pteridophytes. (c) Isogamous & heterosporous. 1. (D) In angiosperms, each cell of an embryo sac is diploid. Heterosporous pteridophytes. Heterosporous also has two different types that are small male spore and big female spore. There is major disagreement on what are the fern families, but 30 are generally . Which one is not an exception in angiosperms? Lycopodiaceae - club mosses! Some algae are used as fertilizer and some blue-green algae are capable of converting clay soil into cultivable land. They produce bisexual gametophytes. Brown algaeare grouped under the class Phaeophyceae. Flagellated gametes 4. Economic importance of algae: Algae are useful to man in a variety of ways. Most of the pteridophytes are homosporous, produce isospores […] 3. PLANT KINGDOM PTERIDOPHYTES Antheridium and archaegonium are produced in prothallus Zygote form sporophyte homosporous Heterosporous- selaginella,salvinia- precursor to seed habit Classified into Psilopsida . - Heterospory because it has two different types of spores, which increase the chance of the plant producing successful offspring. They occur in a variety of other habitats: moist stones, soils and wood. Mosses are heterosporous, which means they make two distinct types of spores; . Birds B. . Female sex organ of algae is called: (a) Carpel (b) Oogonium (c) Archegonia (d) Oosphere Answer Question 15. T hey contain floridea n starch as 2. can grow up to 40 m, giant kelp in pacific, sargassum weed. The evolutionary transition from water to land imposed severe constraints on plants. ferns are homosporous. asked . If red algae store food in the form of floridian starch, brown algae store it as laminarin. asked Feb 2, 2020 in Biology by Ritik01 (48.2k points) plant . Meristem cell of a monocot 7. Being photosynthetic they increase the level of dissolved oxygen in their immediate environment. Incipience of Heterospory 3. 1. Filamentous 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. II. A gametophyte (/ ɡ ə ˈ m iː t ə f aɪ t /) is one of the two alternating multicellular phases in the life cycles of plants and algae.It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. They bear two kinds of spores - microspores and megaspores. Algae are chlorophyll-bearing, simple, thalloid, autotrophic and largely aquatic (both fresh water and marine) organisms. 2. Lycopodiophyta [also called Lycophyta] We have step-by-step solutions for your textbooks written by Bartleby experts! Psilotum is simplest of all vascular plants, it lacks leaves. The gametophyte is the sexual phase in the life cycle of plants and algae. Water Current evolutionary thought holds that all plants—green algae as well as land dwellers—are monophyletic; that is, they are descendants of a single common ancestor. 4. That is, the . 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. 5. 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 . 1. (A) Angiosperms range in size from microscopic Wolfia to tall trees of Eucalyptus. or laminarin as store d food. Name three groups of plants that bear archegonia. a monophyletic group of organisms that contain chloroplasts similar to those in green algae, most are photosynthetic and live in terrestrial habitats, includes mosses, hornworts, liverworts, and all vascular plants dominant primary producers in terrestrial ecosystems land plants nonvascular plants 5.Flagella are absent Brown algae:- 1. Differentiate between the following:- (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte (iv) syngamy and triple fusion . The heterosporous state is a more advanced condition, that seems to have evolved independently in . 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. Furthermore, red and brown algae are mainly marine . They dominated the landscape of the Carboniferous, growing into tall trees and forming large swamp forests. Relatively little is known about plastid and other organelle inheritance in homosporous land plants in . Chiorophyceae contains chlorophyll a and b, giving it the green colourand the name 'green algae'. In homosporous genera the sex determination is observed in gametophyte stage, during the formation of antheridia and archegonia. History of Heterospory 2. 4. Phylum Polypodiophyta" ferns! Homosporous gametophytes must balance their allocation to the competing demands of male (sperm) and female (egg) functions. they produce only one type of spores. 3.They contain the photosynthetic pigments chlorophylls a and d, and phycoerythrin. Differentiate between the following:- <br> (i) red algae and brown algae <br> (ii) liverworts and moss <br> (iii) homosporous and heterosporous pteridophyte <br> (iv) syngamy and triple fusion 141163770 Phylum Ochrista - chloroplasts have 3 membranes and degenerate nucleus indicating recent endosymbiosis. Zygotic meiosis is characteristic of (a) Procaryotes (b) Thallophyta 1. A generalized homosporous plant life cycle is shown in Figure 5. Azolla harbors cyanobacteria (formally and eronaeous thought of as blue-green algae); the cyanobacteria fix nitrogen and is a rich source of nitrogen and used for centuries in SE Asia as an organic fertilizer in flooded rice paddies.