Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: Plant-like protists are called algae (singular, alga). They are a large and diverse group. Some algae, diatoms, are single-celled. Others, such as seaweed, are multicellular (see Figure below ). Answer: algae
Solution:
What is the name of plant-like protists?