Twisted fruit

Today, I have mostly....been trying to make up exam questions. Multi-choice; it's trickier than one might think.

The streptocarpi seem to be doing the floral equivalent of sticking their fingers in their ears and singing loudly so as not to hear the rain beating on the window. Bless their cheerful, sugary colours; although it'll be a while before we see any of their twisted fruits. The pink is supplied by the perpetually flowering perlagonium which makes so many flowers it forgets to grow new leaves....