How does a Venus Flytrap work?

Answer 1

It waits for an insect to trigger the hairs inside the trap and then closes. Once it confirms that it has an insect, it creates an airtight seal and starts releasing digestive juices. This usually happens within 30 minutes or so. These juices, along with the airtight seal, are what suffocate or drown the insect as soon as digestion starts.

Answer 2

The Venus Flytrap has sensitive hairs on the inside of the plant. These hairs can feel the movement when something lands inside. When movement is felt, the trap closes. The trap does not close completely until it leaves time for a tiny insect to escape. Tiny insects do not serve a nutritional purpose for the trap because they are not big enough. After a few more seconds, the trap will shut completely so that it can trap the insect in and any bacteria out. The trap will spit out any foreign objects that are not edible within about twelve hours. If the object is an edible bug of some sort, the trap take five to twelve days to digest the insect.
When a fly lands on an venus plant there is three stems and the fly hits two at the same time the vense fly trap snaps closed. then it kells the fly.