AP Biology (Mader), 11th Edition

Chapter 26: Flowering Plants: Control of Growth Responses

Pre-Test

1
______________ is the gaseous hormone that promotes the ripening of fruits.
A)Cytokinin
B)Ethylene
C)Abscisic acid
D)Gibberellin
2
The shedding of leaves, fruits or flowers is called _______ and is caused by:
A)dormancy; abscisic acid
B)abscission; ethylene
C)senescence; cytokinins
D)photoperiodism; auxins
3
When plants respond to stimuli, they use signal transduction, which involves all of the following components EXCEPT:
A)Receptors
B)Biological clock
C)A transduction pathway
D)Cellular response
4
The plant structure, coleoptiles, refers to a(n)_______.
A)protective sheath that covers roots
B)in dicot plants, the covering for the cotyledon
C)protective sheath that covers the shoots
D)embryonic shoot system
5
Which of the following is a man-made herbicide?
A)Cytokins
B)Gibberellins
C)Auxins
D)Phytochrome
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