ED YOUNG / AGSTOCKUSA / SCIENCE PHOTO LIBRARY ED YOUNG / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Seedling research. Female scient- ist holding a seedling in a pair of tweezers during genetic research. The seedlings seen here have been grown in sterile conditions without soil. They have obtained all the moisture and nutrients that they require from a gel or fluid which has been soaked into the blue squares on which they lie. The growing of plants without soil is known as hydroponics.
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