Portola Valley is one of the forty wealthiest towns in the United States, with a median household income of $244,771 a year. Within the State of California, Portola Valley is ranked as the sixth wealthiest place. The zip code 94028, which encompasses the whole of Portola Valley, has the 9th most expensive housing prices within the country according to Forbes Magazine 2013.
The male gonads are the testes and the female gonads are the ovaries. These reproductive system organs are necessary for sexual reproduction as they are responsible for the production of male and female gametes.
Primary Reproductive Organs (gonads). The primary reproductive organs are the organs responsible for. 1  producing the egg and sperm cells (gametes), 2  producing hormones that function in the maturation of the reproductive system. 3  the development of sexual characteristics. 4  regulating the normal physiology of the reproductive system.