Part B 1) Cyanobacteria form symbiotic associations with: A.Azolla B. primitive
ID: 206123 • Letter: P
Question
Part B
1) Cyanobacteria form symbiotic associations with:
A.Azolla B. primitive plants C. coenocytic soil fungi D. all of these
2) Rhizobium ____________ contain genes related to nitrogen-fixation that are bi-directionally transcribed.
A. cells B. genomes C. plasmids D. nodules
3). It is estimated that there are 26 million bacteria in the leaf surface habitat.
A. true B. fase
4). ______________ can be plant pathogens.
A. bacteria B. fungi C. both A and B D. Neither A nor B
5). Vesicular-arbuscular mycorrhizal fungi can grow _______________ of plant root cells.
A. inside B. outside C. both A and B D. Neither A nor B
Explanation / Answer
1. Cyanobacteria form symbiotic associations with Azolla, primitive plants and coenocytic soil fungi.
Hence option D is correct answer.
2. Rhizobium plasmids contains genes related to nitrogen-fixation that are bidirectionally transcribed.
Hence option C is correct answer.
4. Bacteria and Fungi both can be plant pathogens.
Hence option C is correct answer.
5. Vesicular-arbuscular mycorrhizal fungi can grow inside of plant root cells.
Hence option A is correct answer.