Question

Micorrhizal fungi are found in many plant roots. The fungi aids the plant in uptake of water and nutrients, therefore increasing plant growth and overall health. A farmer is testing the effect of mycorrhizal fungi on the fruit production of the orange trees in his orchard. He plants 200 orange tree saplings in his orchard. Group A, 100 of the saplings, are planted normally. Group B, 100 saplings, are planted with mycorrhizal fungi on the roots. Once the trees reach maturity and begin to provide fruit, the amount of fruit is measured weekly. WEEK MEAN FRUIT WEIGHT GROUP A GROUP B 1.68 kg 1.68 kg 1.54 kg - 1.68 kg • 1.82 kg 1.96 kg 1.40 kg 2.52 kg 1.96 kg 2.80 kg 1.96 kg 3.36 kg 1.68 kg 2.80 kg 1.82 kg 3.92 kg 2. What is the hypothesis of this experiment? (1 pt)

Answer 1

Answer:

2. The null hypothesis of this experiment is that there is no significant difference between fruit production of orange trees without mycorrhizal fungi and fruit production of orange trees with mycorrhizal fungi on their roots.

The alternative hypothesis of this experiment is that there is a significant difference between fruit production of orange trees without mycorrhizal fungi and fruit production of orange trees with mycorrhizal fungi on their roots.

3. The production of this experiment would be the increase in weight of fruit of orange trees with mycorrhizal fungi in their roots.

4. The experimental variable is the weight of the orange fruit.

Explanation-

Experimental variable is the type of variable which scientists want to experiment with. In this experiment, the farmer want to measure whether weight of the orange fruit increases due to mycorrhizal fungi insertion or not; so weight of the fruit is the experimental variable.

5. The independent variable is the mycorrhizal fungi insertion in roots of orange trees.

Explanation-

Independent variable is the things that is changed by the scientists. In this experiment, farmer inserted mycorrhizal fungi in the roots of orange trees and other orange trees left unchanged, so mycorrhizal fungi insertion is the independent variable.

6. The dependent variable is the weight of fruit of orange trees without mycorrhizal fungi in roots and with mycorrhizal fungi in roots.

Explanation-

Dependent variable is the things that are focused by scientists to see how they respond to the change made to the independent variable. In this experiment, farmer want to measure the inceeain in weight with mycorrhizal fungi insertion in roots, so weiggw of the orange fruit is the dependent variable.

7. Group A is the control group.

Explanation-

Control group is the group that is left unchanged in experiment. In this experiment, the group A saplings are planted normally, so Group A is the control group.

8. Group B is the experimental group.

Explanation-

Experimental group is the group which is changed by the scientists. In this experiment, the group B are planted with mycorrhizal fungi on roots, so group B is the experimental group.