To propose: A hypothesis and design an experiment to test the hypothesis. Concept introduction: Mycorrhizal association is a mutual relationship between the mycorrhizae (soil fungi ) and plant roots. The plants provide carbohydrates for the growth of fungi, while the fungi help to increase the surface area of their roots. This association is very important to make soil healthier and fertile.

Question

Erin hypothesizes that a certain fertilizer will cause her sunflowers to grow better. She plants 12 plants chooses the first 6 that sprout to treat with the fertilizer. She measures all the plants daily, and notices that the treated plants were an average of 2 cm taller at 6 weeks. She concludes that the fertilizer causes the plants to grow faster. Which fact would lead you to question Erin’s conclusion? The first plant to sprout was treated with the fertilizer. Erin treated the first 6 plants that sprouted. The treated plants were an average of 2 cm taller at 6 weeks. Erin’s friends also conducted the same experiment.

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Question

Chapter 28, Problem 3CT

Summary Introduction

To propose: A hypothesis and design an experiment to test the hypothesis.

Concept introduction: Mycorrhizal association is a mutual relationship between the mycorrhizae (soil fungi) and plant roots. The plants provide carbohydrates for the growth of fungi, while the fungi help to increase the surface area of their roots. This association is very important to make soil healthier and fertile.

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Erin hypothesizes that a certain fertilizer will cause her sunflowers to grow better. She plants 12 plants chooses the first 6 that sprout to treat with the fertilizer. She measures all the plants daily, and notices that the treated plants were an average of 2 cm taller at 6 weeks. She concludes that the fertilizer causes the plants to grow faster. Which fact would lead you to question Erin’s conclusion? The first plant to sprout was treated with the fertilizer. Erin treated the first 6 plants that sprouted. The treated plants were an average of 2 cm taller at 6 weeks. Erin’s friends also conducted the same experiment.

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