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

Q: Passage: You consist of a great many cells, but like all other organisms, you started life as a single cell. How did you develop from a single cell into an organism with trillions of cells? The answer is cell division. After cells grow to their maximum size, they divide into two new cells. These new cells are small at first, but they grow quickly and eventually divide and produce more new cells. This process keeps repeating in a continuous cycle. Answer: cell division

A: What process allows an individual to develop from a single cell into an organism with trillions of cells?
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Q: Passage: Sponges come in a variety of shapes and sizes. For example, they may be shaped like tubes, fans, cones, or just blobs. They range in diameter from about a centimeter (0.4 inches) to over a meter (3.3 feet). Many species live in colonies that may be quite large. Adult sponges are sessile. This means they are unable to move from place to place. Root-like projections anchor them to solid surfaces such as rocks and reefs. Answer: sponges

A: Root-like projections anchor adults of what colony-dwelling animals to solid surfaces such as rocks and reefs?
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Q: Passage: Eleutherozoa are the echinoderms that can move. This group includes the starfish and most other echinoderms. Answer: gametophytes

A:
Like other bryophytes, moss plants spend most of their life cycle as what?
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