Banana spiders shake their web to make themselves more visible to potential prey. The vibrations created by shaking the web attract insects and other small creatures to investigate what is causing the disturbance. This behavior helps the spider catch more prey.
A web
There are several spiders that are called "banana spiders." The one with highly toxic venom is the Brazilian Wandering Spider. There are also a couple of species of large web-weaving spiders that may be called banana spiders. All of these spiders have venoms that affect the nervous system in some way, so their painful effects would probably be experienced immediately. Brazilian Wandering Spiders have venom that is especially painful in addition to being potentially deadly when a human receives a sufficient envenomation. It definitely causes immediate pain.
A web, dingbat
Well naturally spiders have an unlimited supply of web. They need a web to catch food, if the web were to get torn and the spider didn't have unlimited web then he'd be out of food and die.
26 spiders
Like other spiders they make a web to catch flying insects.
yes
Spiders let there web flow with the wind in any derection then it will land in a leaf or a brunch of a tree. some species fly with there web.
Spiders make the strands of web with special organs called "spinnerets" that are near the tip of the abdomen of the spider.
Spiders inject poison to make it paraliyse or die then it sucks the insect's body
That depends on the species and the size of the web. Most spiders can make a new web over night.