Description : Male gametes are flagellated in (a) Ectocarpus (b) Spirogyra (c) Polysiphonia (d) Anabaena
Last Answer : (a) Ectocarpus
Description : Isogamous condition with non-flagellated gametes is found in (a) Volvox (b) Fucus (c) Chlamydomonas (d) Spirogyra.
Last Answer : (d) Spirogyra.
Description : Which one of the following is wrongly matched? (a) Spirogyra - Motile gametes (b) Sargassum - Chlorophyll (c) Basidiomycetes - Puffballs (d) Nostoc - Water blooms
Last Answer : (a) Spirogyra - Motile gametes
Description : Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra
Last Answer : (c) Riccia, Dryopteris and Cycas
Description : Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.
Last Answer : (c) filamentous alga with flagellated reproductive stages
Description : Which of the following is an example of parasitic alga? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum
Last Answer : (2) Cephaleuros Explanation: Cephaleuros is a genus of parasitic thalloid algae comprising approximately 14 species. Its common name is red rust. The alga is parasitic on tea, coffee, mango and guava causing damage limited to the area of algal growth on leaves.
Description : Which of the following is an example of parasitic alga ? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum
Last Answer : Cephaleuros
Description : Hormogonia are vegetative reproductive structure of: (a) Spirogyra (b) Ulothrix (c) Oscillatoria (d) Yeast
Last Answer : Ans. ((c))
Description : Hormogonia are the vegetative reproductive structures of (a) Chlamydomonas (b) Spirogyra (c) Oscillatoria (d) Ulothrix
Description : Which one of the following is commonly known as Pond Silk'? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix
Last Answer : (1) Spirogyra Explanation: Pond silk is the common name of Spirogyra (algae) because it is very slimy in shape. It is also known as pond silk, water silk, pond scum or mermaid's trees because of its bright green silky appearance. Its filaments shine like silk due to the presence of mucilage.
Description : An alga which can be employed as food for human being is (a) Ulothrix (b) Chlorella (c) Spirogyra (d) Polysiphonia.
Last Answer : (b) Chlorella
Description : The sexual reproduction is absent in (a) Spirogyra (b) Nostoc (c) Ulothrix (d) Volvox.
Last Answer : b) Nostoc
Description : In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of (a) gamete formation (b) zoospore formation (c) zygospore germination (d) vegetative reproduction.
Last Answer : (c) zygospore germination
Description : An alga, very rich in protein, is (a) Chlorella (b) Nostoc (c) Spirogyra (d) Ulothrix.
Last Answer : (a) Chlorella
Description : An example of colonial alga is (a) Volvox (b) Ulothrix (c) Spirogyra (d) Chlorella
Last Answer : (a) Volvox
Description : Columella is a specialized structure found in the sporangium of (a) Spirogyra (b) Ulothrix (c) Rhizopus (d) none of these.
Last Answer : (c) Rhizopus
Description : An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella
Last Answer : (1) Volvox
Description : Which one of the following is commonly known as ‘Pond Silk’? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix
Last Answer : Spirogyra
Description : Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and ... in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.
Last Answer : (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile.
Description : Sexual reproduction in Spirogyra is an advanced feature because it shows (a) different sizes of motile sex organs (b) same size of motile sex organs (c) morphologically different sex organs (d) physiologically differentiated sex organs
Last Answer : (d) physiologically differentiated sex organs.
Description : 2.Which of the following organism shows zygotic meiosis? (a) Nephrolepis, b)Pinus, c) Spirogyra d) mango)
Last Answer : c) Spirogyra
Description : Life cycles of Ectocarpus and Fucus respectively are (a) diplontic, haplodiplontic (b) haplodiplontic, diplontic (c) haplodiplontic, haplontic (d) haplontic, diplontic
Last Answer : (b) haplodiplontic, diplontic
Description : Life cycle of Ectocarpus and Fucus respectively are: (1) Diplontic, Haplodiplontic (2) Haplodiplontic, Diplontic (3) Haplodiplontic, Haplontic (4) Haplontic, Diplontic
Last Answer : (2) Haplodiplontic, Diplontic
Description : Which one of the following statements is wrong? (A) Laminaria and Sargassum are used as food.
Last Answer : Which one of the following statements is wrong? (A) Laminaria and Sargassum are used as ... ) Agar-agar is obtained from Gelidium and Gracilaria.
Description : Which of the following pairs is not correctly matched? Mode of reproduction Example (a) Binary fission Sargassum (b) Conidia Penicillium (c) Offset Water hyacinth (d) Rhizome Banana
Last Answer : a) Binary fission Sargassum
Description : Which one of the following statements is wrong? (a) Algae increase the level of dissolved oxygen in the immediate environment. (b) Algin is obtained from red algae, and carrageenan from brown ... Agar-agar is obtained from Gelidium and Gracilaria. (d) Laminaria and Sargassum are used as food.
Last Answer : (b) Algin is obtained from red algae, and carrageenan from brown algae
Description : Which of the following pairs is of unicellular algae? (a) Laminaria and Sargassum (b) Gelidium and Gracilaria (c) Anabaena and Volvox (d) Chlorella and Spirulina
Last Answer : (d) Chlorella and Spirulina
Description : What is isogamy in algae? -Biology
Last Answer : answer:
Description : What is isogamy anisogamy and oogamy? -Biology
Description : Example of isogamy -Biology
Description : Difference between isogamy and oogamy. -Biology
Description : Forms of isogamy in algae with examples -Biology
Description : Sexual reproduction involving fusion of two cells in Chlamydomonas is (a) isogamy (b) homogamy (c) somatogamy (d) hologamy.
Last Answer : (d) hologamy.
Description : In Chlorophyceae, the mode of sexual reproduction is (a) isogamy (b) anisogamy (c) oogamy (d) all of these
Last Answer : (d) all of these.
Description : Which of the following is a flagellated protozoan
Last Answer : Which of the following is a flagellated protozoan A. Amoeba B. Entamoeba C. Palsmodium D. Trypanosoma
Description : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under the effect of chemicals.
Last Answer : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under ... D. If both As and R are wrong.
Description : A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte
Description : Select the wrong statement. (a) Bacterial cell wall is made up of peptidoglycan. (b) Pili and fimbriae are mainly involved in motility of bacterial cells. (c) Cyanobacteria lack flagellated cells. (d) Mycoplasma is a wall-less microorganism.
Last Answer : (b) Pili and fimbriae are mainly involved in motility of bacterial cells.
Description : Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum (a) Mollusca (b) Protozoa (c) Coelenterata (d) Porifera.
Last Answer : (d) Porifera.
Description : In case of poriferans, the spongocoel is lined with flagellated cells called (a) oscula (b) choanocytes (c) mesenchymal cells (d) ostia.
Last Answer : (b) choanocytes
Description : Slime molds differ from the moldy fungi A- in their mode of nutrition: phagocytosis for the slime molds; absorptive heterotroph for moldy fungi B- in that the moldy fungi produce amoeboid or flagellated cells and the slime molds do not C- Both (a) and (b) D- none of the above
Last Answer : in their mode of nutrition: phagocytosis for the slime molds; absorptive heterotroph for moldy fungi
Description : In case of poriferans, the spongocoel is lined with flagellated cells called: (1) oscula (2) choanocytes (3) mesenchymal cells (4) ostia
Last Answer : (2) choanocytes
Description : Which one of the following is the earliest land plant? (a) Rhynia (b) Cycas (c) Ulothrix (d) Synchytrium
Last Answer : Ans. ((a))
Description : Ulothrix filaments produce (a) heterogametes (b) basidiospores (c) isogametes (d) anisogametes
Last Answer : (c) isogametes
Description : How many gametes are need for non-identical twins?
Last Answer : Feel Free to Answer
Description : What is filament of spirogyra?
Last Answer : Spirogyra is a genus of green algae that is commonly found in freshwater environments such as ponds, streams, and ditches. The filament of Spirogyra is a long, slender, multicellular structure ... , which occurs when the filament breaks into individual cells that can grow into new filaments.
Description : How do Spirogyra and Mucor reproduce asexually ?
Last Answer : Spirogyra and Mucor are both organisms that reproduce asexually through fragmentation. Spirogyra reproduces asexually by fragmentation, which occurs when the filament breaks into individual cells that can ... , and in this way, Mucor can reproduce asexually through fragmentation of the mycelium.
Description : Characteristics of spirogyra algae -Biology
Description : Which of the following pairs are correctly matched? (1) Fertile spike —Ophioglossum (2) Sporangiophore—Equisetum (3) Synangium—Psilotum (4) Apophysis—Spirogyra