HORTICULTURE

Detailed explanation-1: -The term culture can also refer to the microorganisms being grown. Microbial cultures are used to determine the type of organism, its abundance in the sample being tested, or both.

Detailed explanation-2: -To find out more about microorganisms, scientists need to culture them. This means they are grown in very large numbers so that scientists can see all of the bacteria (the colony) as a whole. Scientists can find out what nutrients they need to grow and investigate which chemicals are best at killing them.

Detailed explanation-3: -Agar, which is a polysaccharide derived from red seaweed (Rhodophyceae) is preferred because it is an inert, non-nutritive substance. The agar provides a solid growth surface for the bacteria, upon which bacteria reproduce until the distinctive lumps of cells that we call colonies form.

Detailed explanation-4: -By growing, or culturing, the bacteria, it’s easier to see what types are present and in what quantities. In the Growing Bacteria in Petri Dishes experiment, you’ll collect samples around you, then test them and see what bacteria will grow.