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 : Which one of the following is commonly known as ‘Pond Silk’? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix
Last Answer : Spirogyra
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 : 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 : Which one of the following shows isogamy with non-flagellated gametes? (a) Sargassum (b) Ectocarpus (c) Ulothrix (d) Spirogyra
Last Answer : (d) Spirogyra
Description : An example of colonial alga is (a) Volvox (b) Ulothrix (c) Spirogyra (d) Chlorella
Last Answer : (a) Volvox
Description : An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella
Last Answer : (1) Volvox
Description : In moss, the middle sterile part of capsule is called: (a) Foot (b) Protonema (c) Columella (d) Spore sac
Description : Why do sporangium burst in alcohol? -Biology
Last Answer : answer:
Description : What is the function of sporangium? -Biology
Description : If a sporangium derived from a single cell is called (a) Leptosporangiate (b) Eusporangiate (c) Heterosporangiate (d) None of the above
Last Answer : Ans. ((a))
Description : In a flowering plant, archesporium gives rise to (a) only the wall of the sporangium (b) both wall and the sporogenous cells (c) wall and the tapetum (d) only tapetum and sporogenous cells.
Last Answer : (b) both wall and the sporogenous cells
Description : Isogamous condition with non-flagellated gametes is found in (a) Volvox (b) Fucus (c) Chlamydomonas (d) Spirogyra.
Last Answer : (d) Spirogyra.
Description : Mechanical digestion is the fragmentation of food aided by specialized physical structures, such as teeth, previous to extracellullar digestion. The mechanical fragmentation of food helps digestive ... there are mandibles and chewing muscles to triturate food previous to the chemical digestion.
Last Answer : Concerning extracellular digestion what is meant by chemical digestion?
Description : Which one of the following is the earliest land plant? (a) Rhynia (b) Cycas (c) Ulothrix (d) Synchytrium
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 : Ulothrix filaments produce (a) heterogametes (b) basidiospores (c) isogametes (d) anisogametes
Last Answer : (c) isogametes
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 : Cephaleuros
Description : Differentiate between sporangiophore and zygospore in rhizopus? -Biology
Description : $ Fungi may be heterotrophic or autotrophic. ! Mycelium of Rhizopus has uninucleated cells.
Last Answer : $ Fungi may be heterotrophic or autotrophic. ! Mycelium of Rhizopus has uninucleated cells. A. If both As ... wrong D. If both As and R are wrong.
Description : Illustrate the following with the help of suitable diagrams. a) Regeneration in Planaria b) Budding in Hydra c) Spore formation in Rhizopus
Last Answer : Illustrate the following with the help of suitable diagrams. a) Regeneration in Planaria b) Budding in Hydra c) Spore formation in Rhizopus
Description : Principal source of antibiotic is/are (1) Streptomyces (2) Micromonospora (3) Rhizopus (4) Nocardia
Description : Which of the following shows heterothallism? (a) Rhizopus (b) Cycas (c) Bacterium (d) Ricinus
Description : Sexual reproduction in Rhizopus occurs through: (a) Gametangial contact (b) Gametangial copulation (c) Planogametic copulation (d) Spermatogamy
Last Answer : Ans. ((b))
Description : Fungus without mycelium is: (a) Puccinia (b) Rhizopus (c) Saccharomyces (d) Mucor
Description : The Fungus which is used in the alcohol industry is – (1) Mushroom (2) Candida Aibicans (3) Yeast (4) Rhizopus
Last Answer : (3) Yeast Explanation: Yeasts are eukaryotic microorganisms classified in the kingdom Fungi. By fermentation, the yeast species Saccharomyces cerevisiae converts carbohydrates to carbon dioxide and alcohols - ... the carbon dioxide has been used in baking and the alcohol in alcoholic beverages.
Description : Describe the process of asexual reproduction in Rhizopus?
Last Answer : i) Rhizopus reproduces by spore formation. ii) Spores are single celled and thick walled. iii) Spores are produced in sporangium (at the tip of sporangiophores). iv) On releasing ... When these spores find suitable conditions, they germinate for form new mycelium of Rhizopus.
Description : Write a note on Rhizopus?
Last Answer : i) It is common black bread mold. ii) It is found growing on bread, pickle, and other food materials. iii) Its spores are found every where in the air. iv) Its mycelium ... produced in each sporangium which are dispersed by wind. When spores found suitable conditions they start growing.
Description : Which one of the following is used as vector for cloning genes into higher organisms? (a) Baculovirus (b) Salmonella typhimurium (c) Rhizopus nigricans (d) Retrovirus
Last Answer : (d) Retrovirus
Description : Which of the following microorganisms is used for production of citric acid in industries? (a) Aspergillus niger (b) Rhizopus nigricans (c) Lactobacillus bulgaris (d) Penicillium citrinum
Last Answer : (a) Aspergillus niger
Description : Wilt of pigeonpea is caused by (a) Fusarium udum (b) Gibberella indica (c) Rhizopus nigricans (d) Aspergillus flavus
Last Answer : (a) Fusarium udum
Description : .Which one pair of examples will correctly represent the grouping spermatophyta according to one of the schemes of classifying plants? (a) Acacia, sugarcane (b) Pinus, Cycas (c) Rhizopus, Triticum (d) Ginkgo, Pisum
Last Answer : (d) Ginkgo, Pisum
Description : The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of (a) Taenia, a tapeworm (b) Wuchereria, a filarial worm (c) Rhizopus, a mould (d) Ascaris, a round worm.
Last Answer : (c) Rhizopus, a mould
Description : Which one of the following is a slime mould? (a) Physarum (b) Thiobacillus (c) Anabaena (d) Rhizopus
Last Answer : (a) Physarum
Description : Which of the following microorganism produces only L(+) - lactic acid without further racemization ? A.Leuconostoc mesenteroides B.Lactobacillus delbrueckii C.Rhizopus oryzae D.Lactobacillus bulgaricus
Last Answer : C.Rhizopus oryzae
Description : Which of the following is recommended for the improvement in flavor during ageing of beef under controlled conditions? A.Thamnidium B.Rhizopus C.T. elegans D.M. mucedo
Last Answer : A.Thamnidium
Description : Which of the following is not a member of the division Ascomycota? A- Aspergillus B- Claviceps C- Penicillium D- Rhizopus
Last Answer : Rhizopus
Description : Which of the following groups of organisms digest their food before it actually enters the organism? (1) Bacteria and Protozoa (2) Bacteria and Fungi (3) Fungi and Protozoa (4) Mucor and Rhizopus
Last Answer : Bacteria and Fungi
Description : The Fungus which is used in the alcohol industry is (1) Mushroom (2) Candida Aibicans (3) Yeast (4) Rhizopus
Last Answer : Yeast
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.