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LessonsCatch the Flaw

Lesson 15 · Science · Plant needs and evidence

Step 1 of 4

Find the wrong step

Matching moon-garden seedlings growing with and without light
Your lessonPlant needs and evidenceCore

The Moon-Garden Mystery

Scientists place identical seedlings in matching soil and give both the same water. One sits under a lamp. The other stays dark.

Seedling A
Water + light
Seedling B
Water + darkness

Your question

Which seedling should have more green leaf mass after four weeks?

Lumi’s answer: “Seedling B, because darkness lets plants rest.”

1

Step 1 of 4

Find the wrong step

Find where the reasoning first breaks

Start with Step 1 and move downward. Choose the first line that stops making sense.

Later lines may be wrong too. Pick the first mistake.

Lumi’s work

These lines form one solution. Read them from top to bottom.

  1. 1

    Both seedlings receive the same soil and water.

  2. 2

    The main difference is whether they receive light.

  3. 3

    Plants make food best in darkness because darkness is restful.

  4. 4

    So the dark seedling should have more green leaf mass.