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Growth And Responses In Plants
Test Description: BIO 2
Instructions: Answer all questions to get your test result.
1) Growth in response to a solid object is called
A
nastic movement
B
phototropism
C
thigmotropism
D
gravitropism
2) The sensors in root cap cells are called
A
calculi
B
statoliths
C
graviliths
D
lithographs
3) Stems demonstrate
A
positive gravitropism
B
none are correct
C
negative gravitropism
D
negative phototropism
4) Positive phototropism in stems is due to
A
movement of auxin to the shady side of the stem
B
receptors in the stem
C
differential growth of the stem
D
all are correct
5) Plants exhibit a 24-hour biological rhythm called
A
the Calvin cycle
B
biological rhythm
C
rhythm and blues
D
circadian rhythm
6) Nastic movements differ from tropisms in that
A
tropisms are due to an internal clock
B
nastic movements include a response to gravity
C
tropisms involve growth and unidirectional stimuli
D
nastic movements only occur in the stem
7) A function of auxin is to
A
prevent growth of lateral buds
B
break dormancy
C
ripen fruit
D
induce dormancy
8) A function of ethylene is to
A
promote cell division
B
induce dormancy
C
promote stem growth
D
control abscission
9) A physiological response due to changes in the length of day and night is called
A
photographia
B
photochrome
C
phytochrome
D
photoperiodism
10) If a short-day plant's critical period is 9 hours then it will flower if the length of day is
A
8 hours
B
none are correct
C
9.5 hours
D
10 hours
*select an answer for all questions
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