4 market structures
perfect competition
Buyers and sellers are so numerous and well informed that all elements of monopoly are absent and the market price of a commodity is beyond the control of individual buyers and sellers.
ex: Indian fish market/agricultural markets in general
![](http://study.com/cimages/multimages/16/photovegetablemarket.jpg)
monopoly
the exclusive possession or control of the supply or trade in a commodity or service.
![](https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcSeQ6kUCKRFteAoXyUP0PoqUhobiMGMsOK-5sTX-LoIs6b_hTLB:althealthworks.com/wp-content/uploads/2015/11/by-Dave-Fayram-Flickr-Kevin-Folta-2.jpg)
ex:luxottica/Mansato
monopolistic competition
producers sell products that are differentiated from one another
ex: restaraunts and pubs/hotels
![](http://2.bp.blogspot.com/-anrBUMRTeNM/Ud7VboXsE_I/AAAAAAAAAB4/JNiTpwEqESQ/s1600/rivals-burger-king-1000cs032113.jpg)
oligopoly
a state of limited competition, in which a market is shared by a small number of producers or sellers.
ex: BSNL/Airtel
![](https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSm2N7I0xLx8RyMRfMvseLpdUJb11PlnW2ICroKIf7EslUbtCc_:https://telecomtalk.info/wp-content/uploads/2011/05/BSNL-Imposes-Rs-2.6-Cr-Penalty-on-Airtel-For-Misusing-Its-Network.jpg)
Monsanto Research
Owner/CEO: Hugh Grant
location: St Louis,MO
number of employees: 25,000
product: foods
how long: since 1901
profit: Sales fell to $4.19 billion from $4.58 billion, trailing the $4.49 billion average estimate
fact: Mansanto is fighting against labeling laws which is bad considering they are an agribusiness