How to collect seeds from flowers and what part of the flower do you get the seed?

Do appreciate an honest answer please

How to collect seeds from flowers and what part of the flower do you get the seed?
move they dead flower bulbs pedals and put your had underneath the middle. then shack it a little bit and some should come out
Reply:Well I have Zinnias %26amp; Marigolds in my garden and as the blooms die and dry out the petal fall off and what is left are the seeds. If i pull the blooms off too early the seeds are white or thin..But after waiting for the blooms to die all the way the seeds will be full and black or dark brown. Zinnia seeds are very obvious though and not all flowers are so cooperative.
Reply:Different plants will have different ways to collect seeds some might fall to the ground and others the seeds are inside the flowers or in pods. You have to decide on the plant you want to propagate.
Reply:This depends on the type of flowers. Some seeds are formed in a seed pod and others are formed as dried blooms. Mostly, seeds form where the flower was.