Draw a Labelled Diagram of Gametophyte of Moss; Share This Post. Such a pattern is known as haplo-diplontic life cycle. Fusion of male gamete … with the egg present in the archegonium result in the fonnation of zygote. b. Diplontic Q4. This process is called triple fusion. (b) Diploid and is found in liverworts Explain. The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. A bilobed, dithecous anther has 100 microspore mother cells per microsporangium. They produce biflagellate antherozoids or biciliated sperms. In which plant will you look for mycorrhiza and corolloid roots? Q.19 How many haploid cells are present in a mature female gametophyte of a flowering plant. Why is sporollenin considered the Q3. Zygote do not undergo reduction division immediately. The heterosporous pteridophytes show certain characteristics, which are precursor to the seed habit in gymnosperms. De male cone is in fact composed of numerous strobili. Only one megaspore takes part in the formation of embryo sac; therefore it is called monosporic. With the help of a schematic diagram, describe the haplo–diptontic life cycle pattern of a plant group. What is the equivalent of roots in the less developed lower plants? (b) 7 cells and 8 nuclei Roots are the organs used for the purpose of absorption. Angiosperm male gametophytes have two haploid nuclei (the germ nucleus and tube nucleus) contained within the exine of the pollen grain (or microspore). Q3. Female and male thallus of a liverwort. In this article we will discuss about the process of development of male gametophyte in flowering plants with the help of a suitable diagram. Ans: (c) Fusion of two motile gametes which are dissimilar in size is termed as anisogamy. a. Can you establish a phylogenetic relationship of Cycas with any other group of plants that justifies the above statement? Draw labelled diagrams of 2) This megaspore mother cell divides by meiosis to produce four haploid megaspores which are arranged in a linear tetrad. Self Study Material, Ans: After entering one of the synergids, the pollen tube release the two male gametes into the cytoplasm of the synergid. Hello Everyone.How To Draw Longitudinal Section Of Flower || How To Draw Flower Diagram … called prothallus. Meiosis is the type of cell division that reduces the number of chromosomes in half. Home >> Text Solution >> 2011 Set1 >> Draw a diagram of a male gametophyte of an angiosperm. Write an article in about 100-120 words each with the help of the outline given below.The Role of Trees Vital for life pure air and scenic beauty control pollution-conserve water check soil erosion - shade in summer-fruit all time.? Unlimited Chapter Wise Tests, 10 Draw a diagram of a male gametophyte of an angiosperm Label any four parts from ME DIPLOMA at SANT Lonwowal Institute of engg & Technology Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms. c. Alternation of generation in Angiosperm . of an ovule Chalaza Outer integument Inner integument Micropyle Funiculus Observation (i) Record the features of ovule like number of integuments, nucellus and micropylar and chalazal poles. Ans: Mannitol is the reserve food material of brown algae or phaeophyceae. (a) Protista (b) Plantae (c) Monera (d) Algae (c) Pterdophyte (d) Gymnosperm (C.B.S.E 2010) Q.20 Differentiate between albuminous and non-albuminous seeds, giving one example each. # NCERT. Well Label Diagram Of Spirogyra And Volvox Brainly In Spirogyra filaments are slippery and float in large masses. 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NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. It produces gametes, hence is called a gametophyte. It may belong to bryophytes. But Selaginella falls short of seed habit due to lack of integument around the megasporangium. What would happen if sperms are devoid of their tail? Spores produced from the moss capsule germinate in favorable conditions. (c) Alternation of generation in Angiosperm. (C.B.S.E 2010) Q.21 Draw a diagram of a male gametophyte of an angiosperm. Q3. 6. CBSE Delhi board paper solution of 12th 2011 Draw a diagram of a male gametophyte of an angiosperm. Q7. Some authors consider this association as controlled parasitism or helotism due to the fact that sometimes the fungus sends its haustoria into the algal cells to derive nourishment. Gametophyte (n) The other alternating phase in the life cycle of the plant is the gametophyte generation, in which gametes are formed. We hope the NCERT Exemplar Class 11 Biology Chapter 3 Plant Kingdom help you. b. Gametophyte and sporophyte of Funaria. Ans: Male and female gametophytes of pteridophytes are free living while in gymnosperms male and female gametophyte do not have free-living * existence. Similar Biology Study. Unlimited Full Mock Tests, Tech Companion - A Complete pack to prepare for Engineering admissions, MBBS Companion - For NEET preparation and admission process, QnA - Get answers from students and experts, List of Pharmacy Colleges in India accepting GPAT. Q2. The female gametophytes in these plants are retained on the parent sporophytes for variable periods. Following is the labelled diagram of a male gametophyte of an angiosperm. The giant Redwood tree (Sequoia sempervirens) is a/an . The spores, in turn, produce the gametophytes that give rise to the male and female gametes through the procedure of meiosis. These are autotrophic/holophytic. The other male gamete fuses with the secondary nucleus to form the primary endosperm nucleus. Exercise 5 Embryo sac Fig. A prothallus is ‘ ‘ d. Fungal component will survive while algal partner will die. Q4. Ans: Cycas, one of the few living members of gymnosperms is called as the ‘relic of past’ because it shows many characteristics which are similar to pteridophytes, like, flagellated antherozoids, circinate ptyxis, megasporophyll is leaf like, presence of archegonia, etc. Ans: (c) Cyanobacteria are classified under Kingdom Monera. (c) Alternation of geneation in angiosperm c. Algal component will survive while the fungal component will die. Label any four parts. (a) Draw a schematic labelled diagram of a fertilised embryo sac of an angiosperm. (C.B.S.E 2010) Q.20 Differentiate between albuminous and non-albuminous seeds, giving one example each. They grow bearing sporophylls in compact structures called cones. The development of the zygotes into young embryos take place within the female gametophytes. Cyanobacteria are classified under pteridophytes exhibit this pattern. Draw labelled diagrams of the following: (a) Female and male thallus of a liverwort. • Zygote thereafter produces a multicellular well-differentiated sporophyte which is the dominant phase of the pteridophytes. Ans: The main plant body of the biyophyte is haploid. Q1. Strategies for enhancement in food production. 1 A). Draw labelled diagrams ofa Female and male thallus of a liverwort b Gametophyte and sporophyte of Funaria c Alternation of generation in Angiosperm - Biology - Plant Kingdom However, in bryophytes, the gametophytes are small, photosynthetic, independent and represent dominant phase. c. Alternation of generation in Angiosperm. They produce a multicellular body called a sporophyte. The fungal component in return provides shelter and waste products that are consumed by algal species. How far does Selaginella one of the few living members of lycopodiales (pteridophytes) fall short of seed habit? More reasons for it is not possible to send Mangal Jan without the help of computers. Comment on the life cycle and nature of a fern prothallus. (b) Draw a diagram of a mature human male gamete. c. Alternation of generation in Angiosperm. formation of two types of spores—microspores and megaspores is a characteristic feature in the life cycle of a few members of pteridophytes and all spermatophytes. Two gamete fuse together to produce a zygote which develops into the diploid sporophyte. 22. [Delhi 2014] Ans.The structure or labelled diagram of anatropous ovule Pistil/Gynoecium It is the female unit of flower. Name them. How arc the male and female gametophytes of pteridophytes and gymnosperms different from each other? However, in pteridophytes the 2n (diploid) phase is dominant, well organized, independent while the n phase though also free-living and independent is short lived and photosynthetic. Female and male thallus of a liverwort. The (n) spores dispersed by sporophyte germinate into individual gametophytic plants. The algal component synthesizes the food through photosynthesis which is utilized by the fungal species for its survival. Draw a neat labelled diagram … Draw labelled diagram of a mature male gametophyte of an angiosperm. (a) Pteridophytes (b) Gymnosperms • Plantae, all members of Kingdom Plantae are eukaryotic chloroplast ‘chlorophyll containing organisms commonly called plants. Ans: (d) Plants of this group are diploid and well adapted to extreme conditions. The male sex organ is called antheridium. Draw a labelled diagram of T.S. Personalized AI Tutor and Adaptive Time Table, Heterospory, i.e. PLEASE FAST !!!!!!!!!!!!!!!! Ans: (c) Diploid number (2«) of a flowering plant is 36. The antherozoids are released into water where they come in contact with archegonium. Why (gymnosperms and angiosperms) ADVERTISEMENTS: In this article we will discuss about the structure of Marchantia with the help of diagrams. high, upright, slender and branched. How To Draw Longitudinal Section Of Flower || How To Draw Flower Diagram || Step By Step - YouTube. a. Ans: The diploid sporophyte is represented by a dominant, independent, photosynthetic, vascular plant body. (a) 8 cells . Ans: a. Haplontic life cycle—Volvox, Spirogyra and some species of Chlamydomonas (a) 36 (b) 18 (c) 54 ‘ (d) 72 Q5. Draw a labelled diagram of a T.S of a dehisced anther. (b) Gametophyte and sporophyte of Funaria. Experiments though have shown that algal component can grow independently when separated from fungal species. Pistils may be syncarpous (fused together) or apocarpous (free). Multiple Choice Questions Spores germinate to form a... Gametophore: … Each strobilus contains a short appendix and a larger and broader microsporophylls that contains two microsporangia. Explain. Similar Questions. Ans: (a) The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The embryo sac of an Angiosperm is made up of It needs water to complete its life cycle because the male gametes are motile. NCERT Exemplar ProblemsMathsPhysicsChemistryBiology. 7. The gametophyte produces gametes by mitosis while the haploid spores are produced by sporophyte following meiosis (reduction division). Draw labelled diagrams of (a) Female and male thallus of a liverwort. These microspores give rise to pollen grains (the proper male gametophyte) after undergoing mitotic divisions. No enzyme that degrades sporopollenin is so far known. (a) Monocots (b) Dicots Q3. In each anther, lobe contains to Pollen chambers place longitudinal. Ans: (d) One of the gymnosperms, the giant redwood tree Sequoia is one of the tallest tree species. Thos is … It is the first gametophytic structure to be formed with the modification of a microspore mother cell into the pollen grain. Why are bryophytes called the amphibians of the plant kingdom? List of Hospitality & Tourism Colleges in India, Knockout JEE Main May 2022 (Easy Installments), Knockout JEE Main May 2021 (Easy Installments), Knockout NEET May 2021 (Easy Installments), Knockout NEET May 2022 (Easy Installments), Top Medical Colleges in India accepting NEET Score, MHCET Law ( 5 Year L.L.B) College Predictor, List of Media & Journalism Colleges in India, B. In each antheridium numerous male gametes (antherozoids = sperms) are produced, but in each archegonium only one large single egg cell is produced (ovum). Food is stored as Floridean starch in Rhodophyceae. It may belong to Mentorship from our Experts, Transformation of microspore mother cell (2n) into pollen grain (n) is the first gametophytic structure. 24x7 Doubt Chat Support,. Explain with suitable example. a. Also draw a labelled diagram of embryo sac to explain the phenomena. 10) Explain the microsporphyll of cycas. The female sex organ called archegonium is flask-shaped and produces a single egg. b. Gametophyte and sporophyte of Funaria. Q10. Draw labelled diagrams for : (a) Angiospermic dicot embryo (b) Longitudinal section of a flower showing growth of pollen tube Sol. Sporopollenin is considered to be the most resistant organic material because it is chemically very stable and it can withstand high temperatures, acidic and alkaline conditions, and enzymes. Each anther is usually made up of two lobes connected by a connective. (a) Rhodophyceae (b) Chlorophyceae Draw labelled diagram of a mature male gametophyte of an angiosperm. (d) Haploid and is found in pteridophytes Q8. The haploid plant body is termed gametophyte while the diploid plant body is called sporophyte. • Protista— unicellular eukaryotes These gametophytes require cool, damp, shady places to grow. (c) Diploid and is found in pteridophytes The process of formation and differentiation of microspore from microspore mother cell by reductional division is known as microsporogenesis. (c) Monocots (d) Bryophytes Lichen is usually cited as an example of‘symbiosis’ in plants where an algal and a fungal species live together for their mutual benefit. On germination pollen grain develops into male gametophyte which starts even before pollination. Both will survive and grow normally and independent from each other. It needs water to complete its life cycle because the male gametes are motile. Q6. 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