One in 10 parents actually believe Jaffa cakes count towards fruit and vegetable portions, according to a shocking new survey.
Many parents believe snacks such as Jaffa cakes count as part of the five-a-day.
But one in 20 do not know real oranges count as part of the five-a-day, the poll revealed.
Cola, spaghetti hoops and fruit-flavoured sweets are also mistakenly believed to contribute to the government guideline for fruit and vegetables.
Only a fifth of children reached the five-a-day standard every day.

The Iraqi government is to sell a luxury yacht which was previously owned by the late leader, Saddam Hussein.
The 82m (270ft) Ocean Breeze is equipped with swimming pools, an operating theatre, a helipad and an escape tunnel leading to a submarine.
Iraq has decided to sell the yacht after winning a legal battle with a Jordanian company over its ownership.
A U.S. magazine claims Angelina Jolie is three months pregnant with her seventh child.
In Touch Weekly – which broke the news of Jolie’s second pregnancy with twins – is adamant that the actress is expecting another child in the new year.
In an ‘exclusive’ report the publication, which hits news stands tomorrow, states: ‘An excited Angie can’t stop talking about the new baby. So why doesn’t Brad seem thrilled?’