Oscillatoria
1. Heterocyst is absent in A. Nostoc B. Scytonema C. Gleotrichia D. Oscillatoria Ans . D 2. Oscillatoria is named on A. It's gliding movement B. Oscillatory movement C. Oscillatory flagella D. Creeping movement Ans . B 3. Gaidukov phenomenon or charomatic adaptation occurs in A. Oscillatoria B. Gleotrichia C. Saragassum D. Chara Ans . A 4. In Oscillatoria gas vacuoles are formed when A. Light intensity is low B. Light intensity is high C. Temperature is low D. Oxygen concentration is high Ans . A 5. What is false about of oscillatoriaceae A. All cells of filament are alike . B. All cells of filament can divide . C. Heterocyst is intercalary . D. Trichomes have an envelop of mucilagenous seath . Ans . C 6. Gaidukov phenomenon is A. Capacity to change colour in different wavelengths of light . B. Nitrogen fixation process C. Capacity to absorp plenty of oxygen D. None Ans . A Trichothallic growth occurs in A. Os...