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A) Using the information/image provided, why could the researchers rule out pollinator selection as a reason for flower color variation? B) What must be true about the flowers in Boechera stricta?           A) ​​​​​​Plants have both male and female flowers that are reproductively mature at the same time.           B) ​​​​​​Plants have both male and female flowers that are reproductively mature at different times.           C) Plants produce either male or female flowers C) If the scientists' hypothesis is true, what type of herbivore defense is flower pigmentation in this mustard? either constitutive or inducibl

A) Using the information/image provided, why could the researchers rule out pollinator selection as a reason for flower color variation? B) What must be true about the flowers in Boechera stricta?           A) ​​​​​​Plants have both male and female flowers that are reproductively mature at the same time.           B) ​​​​​​Plants have both male and female flowers that are reproductively mature at different times.           C) Plants produce either male or female flowers C) If the scientists' hypothesis is true, what type of herbivore defense is flower pigmentation in this mustard? either constitutive or inducibl

Human Anatomy & Physiology (11th Edition)
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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A) Using the information/image provided, why could the researchers rule out pollinator selection as a reason for flower color variation?

B) What must be true about the flowers in Boechera stricta?

          A) ​​​​​​Plants have both male and female flowers that are reproductively mature at the same time.

          B) ​​​​​​Plants have both male and female flowers that are reproductively mature at different times.

          C) Plants produce either male or female flowers

C) If the scientists' hypothesis is true, what type of herbivore defense is flower pigmentation in this mustard?

either constitutive or inducible

Boechera stricta is a type of mustard that reproduces predominantly from self- fertilization (~95% of individuals). Scientists surveyed for variation in flower color as a function of the environment. Most have white flowers (a,b in photo below) while some plants have pink or purple flowers (c-f). Researchers found that having pigmented flowers was highly heritable. They found that pigmented flowers had lower fecundity when well-watered, but pigmented flowers had lower rates of herbivory than white flowers. They hypothesize that the lower herbivory is because the same types of compounds responsible for floral pigmentation are also distasteful to herbivores. (d) (a) (b) (e) (c) (f)
Transcribed Image Text:Boechera stricta is a type of mustard that reproduces predominantly from self- fertilization (~95% of individuals). Scientists surveyed for variation in flower color as a function of the environment. Most have white flowers (a,b in photo below) while some plants have pink or purple flowers (c-f). Researchers found that having pigmented flowers was highly heritable. They found that pigmented flowers had lower fecundity when well-watered, but pigmented flowers had lower rates of herbivory than white flowers. They hypothesize that the lower herbivory is because the same types of compounds responsible for floral pigmentation are also distasteful to herbivores. (d) (a) (b) (e) (c) (f)
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