The law of spontaneous generation states that the living forms can grow from the non-living objects. The examples of this law were believed to be the arrival of maggots on meat, and dust from the flies. This law was believed to be true for an extended period of time. During those times, the microscope was not invented, and hence, people were unaware about the existence of the living organisms that cannot be seen with the naked eyes (microorganisms). This led to the people believe in the spontaneous appearances of life forms.
E-coli bacteria which most useful in the routine monitoring of microbial pollution are gram negative rods and this is common indicator organism of water contamination.
It is important to identify enteric bacteria which is one of the major causes of diarrhea disease is bacteria and that detection of pathogenic bacteria is a global key to the prevention and identification of food borne diseases and enteric infections like diarrhea.
The extent of water contamination can be measured using these indicator organisms. This fecal coli-form group has been used as the most common indicator of general wastewater contamination because they are abundant and easy to identify.
To learn more about E-coli bacteria here
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Answer:
Jungles are open, interconnected systems with emergent properties i.e they are more than the sum of their parts. In contrast to the zoo, they cannot be optimised by optimising parts, and small changes in one part could cause massive unintented consequences in another.
Explanation:
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Gametes and female gametes joining, during fertilization, to produce a zygote and then an embryo. Most plants produce both male and female gametes, while some produce one or the other. Pollen contains the male gametes and is found on the stamen. Ovules contain the female gametes and are found in the pistil.
