Subject: Where are the seeds in a pineapple plant?

My first grade class is learning about life cycles, starting with 
those of plants.  We understand that the part of a plant that contains 
the seeds is the fruit.  We did an exploration of many 
fruits (i.e.:cucumbers, tomatoes, apples, melons, beans, kiwi, etc.) 
to find seeds, but couldn't find seeds in a pineapple, as expected.  
Can you give us any information to help solve this mystery?

Thanks,
 Barbara Lehn

Re: Where are the seeds in a pineapple plant?