Materials

■ 2 clear plastic cups

■ plastic-foam floater with 6 holes in it

■ cheesecloth (must be large enough to cover the plastic-foam floater)

■ 50 mL of complete nutrient solution

■ plastic dropper

■ labeling tape

■ 50 mL graduated cylinder

Background

1. Hydroponic cultivation is a technique for growing plants in a solution that contains all of the inorganic nutrients the plant needs. Plants that are grown hydroponically do not require soil.

2. The beginning of growth in a seed is called germination.

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