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Pre Test Quiz
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1
Which of the following groups of plant hormones stimulate cell division and differentiation?
A)auxins
B)gibberellins
C)All of these groups of plant hormones stimulate cell division and differentiation.
D)cytokinins
2
Which of the following groups of plant hormones promotes growth and cell elongation?
A)auxins
B)gibberellins
C)cytokinins
D)None of these groups of plant hormones promote growth and cell elongation.
3
True or False: Plant hormones act on the part of the plant where they are produced.
A)True
B)False
4
Plant responses such as flowering and tropism are responses to the plant’s __________ environment; other responses, such as production of chemical toxins, are responses to the plant’s __________ environment.
A)biotic; abiotic
B)abiotic; biotic
C)physical; chemical
D)local; extended
5
Flowering in certain plants is influenced by photoperiod, which is
A)the amount of sunlight a plant gets in the spring.
B)the amount of sunlight a plant gets in the fall.
C)the length of day and night in a 24-hour period.
D)the length of a day following rainfall.





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