Which of these microbes causes "walking pneumonia"?
klebsiella pneumoniae
streptococcus pneumoniae
mycoplasma pneumoniae
chlamydophila pneumoniae

Walking pneumonia can be caused by the microbes mycoplasma pneumoniae  and chlamydophila pneumoniae.

Explanation:

Atypical pneumonia, commonly known as walking pneumonia, is a type of pneumonia which is not caused by a single pathogen or a single type of pathogen. The organisms that cause walking pneumonia are called atypical organisms. Therefore, disease can be caused by special bacteria, fungi, viruses and protozoa.

Examples of atypical organisms include: chlamydophila pneumoniae, chlamydophila psittaci, francisella tularensis, mycoplasma pneumoniae, etc.

Therefore, Walking pneumonia can be caused by the microbes mycoplasma pneumoniae  and chlamydophila pneumoniae.

Plant cells are arranged in tight squares due to their cell walls and are filled with water. These characteristics give the plant a structural support.