Where do carrot seeds come from?

Carrots are a delicious, crunchy snack. But unlike other vegetables, carrots don’t have seeds inside. So how do farmers grow them?  We asked plant scientist Jeff Mitchell to help us get to the root of the matter.   Got a question that you want us to chew over?  Send it to us at BrainsOn.org/contact, and we’ll dig up some answers. See omnystudio.com/listener for privacy information.