Auxin

Quiz
•
Biology
•
11th - 12th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which option correctly states the most common form of auxin?
Integrated acetic acid (IAA)
Inhibited-3-acetic acid (IAA)
Indole-3-acetic acid (IAA)
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Where is auxin produced?
At the nodes
Apex of the stem
At the internodes
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which one of the followings is/are correct about IAA?
I- IAA activates proton pumps, which lowers the pH. This activates an enzyme to break bonds in the cell wall
II- IAA accumulate on the illuminated side the shoot.
III- IAA causes the illuminated side to elongate, that's why the shoot bends toward light.
I and II
I, II and III
Only I
II and III
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Darwin investigated using oat coleoptiles. Which one of the followings is/are correct about Darwin's experiment on the action mechanism of IAA?
I- He found that there is no bending response to light when the coleoptile is removed.
II- When the tip is covered, there was no bending response
III- The tip was shone on the tip, but lower regions were covered, the coleoptile gave no bending response.
I and II
Only I
I, II and III
Only II
5.
OPEN ENDED QUESTION
1 min • 1 pt
What happened when Boysen and Jensen inserted a thin flake of mica in the illuminated side?
Evaluate responses using AI:
OFF
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-3
6.
OPEN ENDED QUESTION
2 mins • 1 pt
What happened when a thin glass plate vertically inserted through the tip?
Evaluate responses using AI:
OFF
Tags
NGSS.HS-PS4-3
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