after secretion what?!!!!!

Any extracellular enzyme..

I do not think that you said be correct.

The sporulation delaying protein (SDP) efflux pump in Bacillus amyloliquefaciens . . .

https://www.ncbi.nlm.nih.gov/pubmed/28917834

http://ijs.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-37-1-69

Hi Nikky,

When the bacteria is starving or senses a change in the environment, like extreme temperatures and drought, they will produce a spore. This spore is a protective, thick cell wall and can help the bacteria survive for several years by living in a dormant state. The spore is made up of few things but includes peptidoglycan, cytoplasm, water, and bacterial DNA. Once environmental conditions improve, the spore will break.

Spore formed by bacteria under hard conditions in many cases to help in bacteria survive. More about this read in:

https://www.ncbi.nlm.nih.gov/pubmed/28917834

Some bacteria species forms spores to protect themselves from unsuitable environment conditions or from exposure to toxic chemicals. Spores are thermostable and impermeable to different xenobiotics, such as antimicrobial agents, toxins etc,

Because some secreted material have auto inhibitory effect on growth of bacteria

Spores help bacteria to survive by being resistant to extreme changes therefore bacteria produce spores

Hi,

First, scientists are unable to answer the question: "why?"; only "how?" with many efforts… Second I do not understand the rest of your question…

Sincerely,

Christian

Christian: "how" pertains to the material and efficient causes; "why" pertains to the formal and the final causes. Both "how?" and "why?" are answerable, and in the realm of natural phenomena, always answerable..

I do not think so…