Which of the following is primarily responsible for cell elongation, gravitropism, and apical dominance implants?
A. Auxin
B. gibberellin
C. Cytokinin
D. Phytochrome
E. ethylene
Answer: A. Auxin
Biology & Microbiology
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All organisms store energy in a chemical form called:
A. glucose. B. DNA. C. ATP. D. RNA. E. protein.
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Which of the following encases a nematode body and provides it with support?
a. cuticle b. hemocoel c. spiracle d. chitin
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Which type of plant hormone would be used by commercial grape growers to get larger grapes by
lengthening the stem on which fruits develop?
a. abscisic acid b. ethylene c. auxins d. salicylic acid e. gibberellins
Biology & Microbiology
Plants that reproduce asexually might produce identical progeny from all of the following except
A. portions of roots B. portions of stem C. portions of leaves D. pollen grains
Biology & Microbiology