Gibberellins, & Synergism & Antagonism

Question 1

What do gibberellins affect?

Answer 1

• the length of the internodes
  
  • the regions between the leaves on a stem

Question 2

How were gibberellins discovered?

Answer 2

• they are produced by a fungus from the genus GibberellaI that affects rice
• the infected seedlings grew extremely tall and thin
• it was then disocvered plants produce the same compounds after analysis

Question 3

Why are plants produced where the gibberellin synthesis pathway is interupted?

Answer 3

• produces dwarf plants
• reduces waste
• plants less vulnerable to damage by weather and harvesting

Question 4

What is synergism in plants?

Answer 4

hormones working together to produce a greater response than they would individually

Question 5

Wgat is antagonism

Answer 5

opposite effects

e.g. causing growth and inhibiting it