Total darkness and pea seedlings grown in the light, Biology

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What differences would you expect to see among pea seedlings grown for 10 days in total darkness and pea seedlings grown in the light for the similar period of time?

The seedlings grown in darkness will have long, thin, white stems (long internodes) and small, unopened leaves.

The seedlings grown in the light will have shorter, thicker greenish stems (short internodes). The leaves will have started up and will be green, and larger than those of the seedlings in darkness.

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