An experiment tested the hypothesis that soil pH affects the color of flowers produced by plants. A researcher measured the pH of the soil beneath 1,000 hydrangea plants naturally occurring outside, in a park, and recorded the colors of the flowers on each plant. The researcher found that when the soil pH was about 5.0, hydrangeas produced 99% blue flowers, and when the soil pH was around 7.0, the plants produced 98% red flowers. part a: Which of the following would be an abiotic factor in the plants’ environment? Group of answer choices A. daylength B. pollinators C. insects that eat the plants D. flowers E. birds part b: Did the researcher show that soil pH caused the color of the flowers? Group of answer choices A. Yes, because the researcher included 1,000 plants in the study. B. Yes, because the results very strongly showed the relationship between flower color and soil pH. C. Yes, because the researcher had a clearly stated hypothesis. D. No, because there were not enough plants included in the study. E. No, because some other factor could explain both soil pH and flower color. part c: What type of experiment did the researcher conduct? Group of answer choices A. natural history B. laboratory C. quantitative model D. manipulative E. field part d: What is the independent variable in the experiment? Group of answer choices A. type of plant B. soil pH C. the park where the plants grew D. percentage of red or blue flowers E. number of plants

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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An experiment tested the hypothesis that soil pH affects the color of flowers produced by plants. A researcher measured the pH of the soil beneath 1,000 hydrangea plants naturally occurring outside, in a park, and recorded the colors of the flowers on each plant. The researcher found that when the soil pH was about 5.0, hydrangeas produced 99% blue flowers, and when the soil pH was around 7.0, the plants produced 98% red flowers.

part a:

Which of the following would be an abiotic factor in the plants’ environment?

Group of answer choices

A. daylength

B. pollinators

C. insects that eat the plants

D. flowers

E. birds

part b:

Did the researcher show that soil pH caused the color of the flowers?

Group of answer choices

A. Yes, because the researcher included 1,000 plants in the study.

B. Yes, because the results very strongly showed the relationship between flower color and soil pH.

C. Yes, because the researcher had a clearly stated hypothesis.

D. No, because there were not enough plants included in the study.

E. No, because some other factor could explain both soil pH and flower color.

part c:

What type of experiment did the researcher conduct?

Group of answer choices

A. natural history

B. laboratory

C. quantitative model

D. manipulative

E. field

part d:

What is the independent variable in the experiment?

Group of answer choices

A. type of plant

B. soil pH

C. the park where the plants grew

D. percentage of red or blue flowers

E. number of plants

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