Overall, water movement from the soil, through plant tissues, and finally to the atmosphere through transpiration, is driven by a gradient of
A) water potential.
B) osmotic pressure.
C) water temperature.
D) specific leaf area.
A
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The innermost layer of the root cortex, which is a selectively permeable barrier that helps control the
movement of water and dissolved minerals, is called the
a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.
Which of the following statements is true of viral conjunctivitis?
A. It is caused by adenoviruses. B. It has a mucopurulent discharge. C. It is caused by Chlamydia trachomatis or Neisseria gonorrhoeae. D. It must be treated with both topical and oral antibiotics.
Which organism in the food web would be a secondary consumer?
A) robin B) rabbit C) cricket D) fungi
Red algae, green algae, and plants are so closely related that they are grouped in the same supergroup by most biologists.
Answer the following statement true (T) or false (F)