A plant that curls up and dries out, then comes back to life when watered. All sorts of shrimp. Dried out eggs can hatch in water years later. Easter Egg Plant. Fruits look like colored eggs.
Leaves fold up when touched.
Ferns and jellyfish, for having weird 2 cycle lives including a sexual phase and an asexual phase. A contributor notes that this seaweed, which looks like any other seaweed, is actually made up of one cell. Normally independently-minded bits of slime mold consolidate into a mass under stress, and produce spores on stalks. Guess I'll add colony insects. It's just really cool how scout bees will look around for a new nesting site and then debate among themselves whether to accept it or not.