A student hypothesizes that plants require light to grow. She places 15 plants i
ID: 111527 • Letter: A
Question
A student hypothesizes that plants require light to grow. She places 15 plants in a dark closet for 3 months and gives them equal amounts of water 3 times each week. After 3 months, all of the plants are stead. The student concludes that her hypothesis was correct. Why is her conclusion not valid? A) Because water was not the variable being tested, the plants should not have been given water. B) The student did not include a control group in her experimental setup. C) The student did not water the plants each day. D) The sample size for the experiment was too small.Explanation / Answer
Answer:
Option B
The student did not include a control group in her experimental setup.
Explanation:
Plants need light, they can't survive without light. Light is a important factor for photosynthesis. Photosynthesis process is to covert carbon dioxide and water into food. Without light phtosyntehsis can't work properly and without light plants didn't get food properly. So here the student kept plants in a darkest room that's why all plants were dead because of there is no sunlight.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.