The Effects of Light on Tagetes patula Growth Amber D. Jones Undergraduate Student Zoology Concentration Dept. of Biology, TTU Cookeville, TN 38505

Project Summary Plants need light to grow. Plants need light to grow. Will the light type that Tagetes patula are grown in effect their growth? Will the light type that Tagetes patula are grown in effect their growth? Objective: To determine if Tagetes patula growth is effected by the type of light the plant is grown in. Objective: To determine if Tagetes patula growth is effected by the type of light the plant is grown in. Hypothesis: Tagetes patula will grow better in natural (sun) light than in artificial (incandescent) light. Hypothesis: Tagetes patula will grow better in natural (sun) light than in artificial (incandescent) light. Grow Tagetes patula: some in sun only and others in incandescent only Grow Tagetes patula: some in sun only and others in incandescent only Expected results are that Tagetes patula will grow better in sunlight. Expected results are that Tagetes patula will grow better in sunlight.

Background 6/annurev.pp /annurev.pp /annurev.pp /annurev.pp “Light…supplies the energy upon which plant life is based…” “The effects of light quality on plant life are manifold (Stolwijk)” “Light…supplies the energy upon which plant life is based…” “The effects of light quality on plant life are manifold (Stolwijk)” Plants need light to survive. My experiment examines which light type yields better growth in Tagetes patula. Plants need light to survive. My experiment examines which light type yields better growth in Tagetes patula.

Objective and Hypothesis Objective: To determine if plant* growth is effected by the type of light the plant* is grown in. Objective: To determine if plant* growth is effected by the type of light the plant* is grown in. Hypothesis: Plants* will grow better in natural (sun) light than in artificial (incandescent) light. Hypothesis: Plants* will grow better in natural (sun) light than in artificial (incandescent) light. Null: Different light type will not effect plant growth Null: Different light type will not effect plant growth

Methods and Materials Stats Stats Data Forms Data Forms Experimental Design Experimental Design

Expected Results and Benefits Plants* will grow better in sunlight. Plants* will grow better in sunlight. Benefits of research: Determining the light type that grows plants* best. Benefits of research: Determining the light type that grows plants* best.

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