BIOLOGY  VOL. II
BIOLOGY VOL. II
16th Edition
ISBN: 9781308795317
Author: Raven
Publisher: Mcgraw-Hill/Create
bartleby

Videos

Textbook Question
Book Icon
Chapter 40, Problem 1U

Which of the following is stimulated by blue light?

a. Seed germination

b. Detection of plant spacing

c. Phototropism

d. Shoot elongation

Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

The white light consists of the seven colors “violet”, “indigo”, “blue”, “green”, “yellow”, “orange”, and “red”. The blue color of the light has the wavelength equal to 460 nm (nanometer).

Answer to Problem 1U

Correct answer:

The phototropism is stimulated by the blue light. Therefore, option c. is correct.

Explanation of Solution

Reason for the correct statement:

The direction of the feedback of the plant organs either in the direction of the light source or away from the light source is called phototropism. The blue light receptors are present on the plant organs, which direct the phototropism.

Option c. is given as “Phototropism”.

As, “the blue light influences the movement of plant organs, the plant organs in most of the cases show the positively phototropic movement”, it is the right answer.

Hence, option c. is correct.

Reasons for the incorrect statements:

Option a. is given as “Seed germination”.

The seed germination does not require the presence of light, as the seed germinates beneath the soil. So, it is a wrong answer.

Option b. is given as “Detection of plant spacing”.

The detection of the plant spacing is related to the far-red light exposure. This is not related to the blue light stimulation. So, it is a wrong answer.

Option d. is given as “Shoot elongation”.

The elongation of the shoot is regulated by the presence of a pigment, which is blue green in color. So, it is a wrong answer.

Hence, options a., b., and d. are incorrect.

Conclusion

The parts of the plants move positively from the stimulation by the blue light.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Consider the figure below. Suppose the true price of a health care service is P1. Suppose further that the individual has obtained insurance that has a fixed copayment for this particular service. The copayment is represented by price P2. represents the quantity of the service the individual would consume without insurance. quantity of the service the individual would consume with the insurance. Health Care Service represents the P. P₂ a Q1;Q2 Q2; Q3 Q1; Q3 Q3; Q1 Q2; Q1 फ f Q ८ g d h Q3\D 7Q 00000
The table shows the utility Jordan receives at various income levels, but they do not know what their income will be next year. There is a 15% chance their income will be $25,000, a 20% chance their income will be $35,000, and a 65% chance their income will be $45,000. We know that Jordan is Income $25,000 Utility 2,800 30,000 3,200 35,000 3,500 40,000 3,700 45,000 3,800 ☐ none of the above 0 000 risk taker (lover) because their marginal utility of income is increasing risk neutral because their marginal utility of income is constant risk averse because their marginal utility of income is decreasing risk neutral because their marginal utility of income is decreasing
OOOO a d+e d a+b+c Consider the figure below. Suppose the true price of a health care service is P1. Suppose further that the individual has obtained insurance that has a fixed copayment for this particular service. The copayment is represented by price P2. The social loss from moral hazard if the individual has copayment P2 is represented graphically by the area(s): Health Care Service P. a No 4 ८ e g Q2 Q3 D
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License