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1. What is the function of a heterocyst and akinete in Cyanobacteria?
2. Describe a vegetative branch of a yellow-green algae.
Provide a reference
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- Prokaryotes that obtain their energy from chemical compounds are called _____. a. photorophs b. auxotrophs c. chemorophs d. lithotrophsThe group Diplomonadida is characterized by: a. a mouthlike gullet and hairlike surface. Paramecium is anexample. b. flagella and a lack of mitochondria. Giardia is an example. c. nonmotility, parasitism, and sporelike infective stages. Toxoplasma is an example. d. switching between autotrophic and heterotrophic lifestyles. Euglena is an example. e. large protein deposits and movement by two flagella, which are part of an undulating membrane. Trypanosoma is an example.1. What is A term referring to the changeable form of the bacteria?2. What is the filamentous cyanobacteria with no akinete or heterocyst formation?
- 1. What is a carposporangium? Explain the function and role of the pericarp and trichogyne in the formation of carpospores in red algae. 2. What are tetraspores in red algae? Are they haploid or diploid? 3. Briefly explain the asexual and sexual mode of reproduction in red algae.4. Name two environments of Anabaena. Below is an image of Oscillatoria. The cyanobacterium reproduces by fragmentation. As the cells break apart, fragments of hormogonia are created and develop into new long filaments of cells. 1. Based on its name, how do you think it moves? 2. What are hormogonia? 3. Do you see any hormogonia? 4. Anabaena and Oscillatoria are filamentous cyanobacteria. What is different about Oscillatoria from Anabaena in structure?Which of the following statement/s about algae flagellation is/are NOT true? * I. Oedogonium is biflagellate. II. Chlamydomonas and Ectocarpus are multiflagellate. III. Polyblepharis is octaflagellate. IV. Macrozoospores of Ulothrix is quardiflagellate.
- 1. Hay infusion is one of the most popular means to obtain protozoa for microscopic observation. What makes it a good source of protozoa? Can you use other sources? Why or why not? 2. What observable structure makes these microorganisms ubiquitous or widespread in Rhizopus oligosporus and Penicillium sp.An organism is a mixotroph loses its plastids, it survives because of which reason; 1. It has an endospore and becomes dormant until conditions improve 2. It has photosynthesis by membranes present in the cytoplasm 3. since it is also a heterotroph engulfs organic material by phagocytosis or by absorption for nutrition 4. uses mitochondria that acquite after loosing its plastidsBelow is an image of Anabaena. 1. How would you describe the morphology of Anabaena (unicellular, colonial, or filamentous)? 2. Can you identify a heterocyst? If so, label the heterocyst. 3. What is the function of the heterocyst?
- Describe/define the following terms in relation to cyanobacteria: heterocysts akinete hormogonia gas/vesicles stromatolites1. What characteristic does Euglena possess that allows it to move in its environment? 2. How are Spirogyra chloroplasts arranged in the cell?1. What refers to the flagellated feeding groove in the Phylum Parabasala?2. What is a bag like sac that underlie the cell membrane characteristic of the dinoflagellates?
