A bacterium encounters unfavourable environmental conditions. Which response described in the chapter may help it persis
Bacteria reproduce mainly by fission, but under unfavourable conditions some bacteria produce spores. Ascocarps, plasmodia and basidia belong to fungi or slime moulds rather than bacteria.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans