Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

A hookworm is classified as a parasite.
A hookworm is classified as what type of organism?

Water and humidity is the critical factor for the survival of segmented worms.
What is the critical factor for the survival of segmented worms?

Eyespots do the cells in the front of a volvox typically develop to help swim towards light.

What do the cells in the front of a volvox typically develop to help swim towards light?