The above figure is a photograph of
a. plant with root nodules.
b. mycorrhizae.
c. root hairs.
d. demonstration of the effect of mutualistic
Rhizobium.
e. a nodule forming around area where the
bacterium infect.
Answer: e
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True or false: In general, males and females of the same species can produce fertile offspring
A. true B. false
Which of the following results in a spontaneous mutation?
A. free radicals produced by cellular metabolism B. exposure to ultraviolet light C. exposure to benzo (a)-pyrene, a chemical substance found in cigarette smoke D. exposure to ultraviolet light and benzo (a)-pyrene E. exposure to X-rays
Hanna, 18 years old, is over 6 feet tall. She has an x-ray film taken that shows that her long bones are continuing to lengthen. Eventually, a thorough examination shows that she has a tumor growing in her ________
A) posterior pituitary B) pineal gland C) adrenal medulla D) anterior pituitary
Amyloplasts are organelles that store:a
fat.
b. starch. c. protein. d. lipids. e. DNA