Answer:

The seedlings of set-up B were taller because they were seeking sunlight. The presence of sunlight enables the plant to produce food via photosynthesis, which is essential to plant growth.

Explanation:

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Answer:

In 7 days, you'll notice that some seeds have cocoon like pouch and they will eventually get bigger turning into this (the picture) soon enough it will turn brown and ready to be taken out and plant more.