Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Nobody really has such colorful eyes! The colors were added digitally after the photo was taken. They represent all the different colors of light. Light is a form of energy that travels in waves. Light of different colors has different wavelengths. Answer: wavelengths
[EX A]: Different colors of light differ in terms of which important attribute?

[EX Q]: Passage: The embryo develops from a fertilized egg. While still inside the seed, the embryo forms its first leaf (cotyledon) and starts to develop a stem (hypocotyl) and root (radicle). Answer: cotyledon
[EX A]: What is the name of the first leaf developed inside an embryo?

[EX Q]: Passage: organelle in the cells of plants and algae where photosynthesis takes place. Answer: organelles
[EX A]:
What part of the cell in plants and algae does photosynthesis take place?