WorksheetsBIO270 Plant Hormones
Total questions: 20
Worksheet time: 3600secs
Auxins are responsible for _____________ of a plant
Colour change
Watering
Phototropism
Growth
Which of the following are plant hormones
Auxin
Cytokinin
Gibberellin
Abcissic acid, ethylene
All
Stimulates cell division
abscisic acid
auxin
cytokinins
gibberellin
ethylene
The growth hormone that is used to speed up the ripening of fruits for export is
giberellin.
ethylene.
cytokinin.
auxin.
Where is auxin formed
Tip of stem and root
Leaves
Embryo
All
What happens when you place an over ripe banana in a fruit bowl with other fruit?
Nothing will happen
The other fruit will grow in size
Ethylene gas will cause the fruit to grow mold
Ethylene gas will cause the other fruit to ripen
Breaks seed dormancy and promotes growth (can make fruit bigger)
Auxin
Gibberellin
Cytokinins
Ethylene
When creating seedless fruit, what type of flowers are sprayed with gibberellins gas?
pollinated
unpollinated
older
small
Which hormone promotes seed germination?
abscisic acid
ethylene
gibberellin
auxin
Promotes seed dormancy
abscisic acid
auxin
cytokinins
gibberellin
ethylene
Stimulates cell division and
lateral (<---->) growth
abscisic acid
auxin
cytokinins
gibberellin
ethylene
This hormone may oppose the effects of auxins. This is why you trim the tops off of stems (where auxin is produced) to have more lateral growth.
abscisic acid
auxin
cytokinins
gibberellin
ethylene
My plant is losing a lot of water because it is hot today. Which hormone should I give it so that it will stop losing water?
Auxins
Cytokinins
Ethylene
Abscisic acid
Gibberellins
What are the chemical messages in a plant called
Hormones
Oxygen
Parenchyma cells
Causes apical dominance
abscisic acid
auxin
cytokinins
gibberellin
ethylene
Two types of triple response to ethylene mutant are
ein mutant
ent mutant
ctr mutant
ctrl mutant
A burst of ethylene is associated with the programmed destruction (apoptosis) on_______, ___________ and ____________.
(a)
Which hormones stimulate the aleurone to synthesis and secrete digestive enzyme that hydrolyze stored nutrients in the endosperms?
Gibberrellins
Auxin
Cytokinins
Abscisic acid
What are the triple response to mechanical stress induced by ethylene?
Stem elongation slows
The stem chickens
The stem thickens
The stem curves
