No

Guard cells are cells that close when there is dry weather, preventing the leaf from becoming dehydrated

Depends on how little water. The guard cells may block the stomata cuticle, therefore no water. It may be open so it can absorb. depends on how dry (really or a bit)

Stomata are just openings made when guard cells swell. they swell with a lot of available water. when its dry they close up. dry weather causes them to close because the water evaporates.

Fish have a spine and are vertebrates. They have wet skins of scales that are covered with a mucus to guard against disease.

Splash guard. It keeps the serp belt dry and other delicate electronic connections dry.