A student who wanted to test their claim that plants grow better in sunlight than in the dark, placed one plant in container "X "with fertilized soil on the window sill, where it received direct sunlight. They placed an identical plant in container "Y" containing regular soil in a closet. They observed the growth rate of each plant for about three weeks What did the student do wrong? 2. Advise this student on how he could make this experiment better or more reliable? 3. What are two things about the plants the student can observe for how fast the plants are growing (growth rate)?

The correct answer are -

1. there are more than one variable that are manipulated; sunlight and fertilizer

2. If provide fertizlier to both plants; placed in sunlight and placed in dark

3. By measuring height of the plant and production of the fruit.

Explanation:

In this investigation, one plant X is placed in sunlight and provided fertilizer where the plant Y placd in the dark did not received fertilizer, so there are two variables that are manipulated in this setting, which can influence the result in the study.

To make this experiment one shuld provide fertilizer to both the plants for control environment and no other infunces to affect the growth of the plants.

To measure the growth of the plant one can measure the height and fruit production each week to compare the difference in growth rate.

true is the answer : )