Describe how phytochrome is used to determine plant spacing.
What will be an ideal response?
Leaf shading increases the amount of far-red light relative to red light. Plants measure the amount of far-red light bounced back to them from neighboring plants. The closer together plants are, the more far-red relative to red light they perceive and the more likely they are to grow taller-a strategy for outcompeting others for sunlight.
You might also like to view...
In which tissue would you look for cells that function in point-to-point communication?
(a) connective. (b) epithelial. (c) muscle. (d) nervous.
Which of the following statements about B cells is true?
A. B cells change into plasma cells after encountering an antigen and then produce antibodies. B. B cells carry receptor molecules on their cell surfaces. C. Some B cells become memory cells. D. B cells develop and mature in the bone marrow. E. All of the answer choices are correct.
The phylum name Arthropoda refers to:
a. the ability to fly. b. a hard exoskeleton. c. jointed appendages. d. a segmented coelom. e. respiratory capabilities
Genetic drift, mutations, gene flow, nonrandom mating, and natural selection can cause ____ change.
Fill in the blank(s) with the appropriate word(s)