Though the shape may be convenient to handle, it is not always advantageous.
2006-08-07 06:49:28 · 5 answers · asked by venkatesh m 1 in Science & Mathematics ➔ Biology
You're right...the round shape isn't always advantageous. But there ARE actually square and rectangular petri plates, and they're used in many different labs for different uses. We use rectangular petri plates in our lab all the time.
2006-08-07 07:36:54 · answer #1 · answered by Anonymous · 0⤊ 0⤋
They are round for ease of manufacture, ease of use, and (in the good old days when they were all made of glass) ease of cleaning.
Simply put- they're cheaper in the round than in any other shape. Plus, bacterial and fungal cultures will grow in a radial pattern; as a result, when cultures are initiated from the center, they have the longest to grow outwards in a round plate.
2006-08-07 07:06:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Round petriplates are commonly used because in round petriplates its easy to mix the sample with media by swirling the plates as compare to square or ractangular petriplate. In square or rectangular petriplates there may be chances of collection of sample in the corners and round petriplates. One more thing is that round petriplates are easy to clean also.
2015-08-20 02:14:46 · answer #3 · answered by Sandeep 1 · 0⤊ 0⤋
They aren't always. You can pour the media into any autoclavable dish you want. It's just the round ones are cheap.
I think it might have to do with the colony forming units making round areas? Probably just convention.
2006-08-07 07:50:45 · answer #4 · answered by Crystal Violet 6 · 0⤊ 0⤋
Makes it easier to put the top on.
2006-08-07 06:55:23 · answer #5 · answered by Anonymous · 0⤊ 0⤋