Tree Growth Regulators Test

Tree Growth Regulators Test
Please fill out your email address in the first box and your name, ISA cert. no. in the second box. Answer the questions below and when you are finished, press submit.

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Name :

Question: 1. Type 1 Tree Growth Regulators:
were invented in the 1950s.
stop cell division on contact.
prevent unwanted sucker sprouts.
all of the above.

Question: 2. Type 2 Tree Growth Regulators:
were invented in the 1950s.
inhibit cell division.
inhibit cell enlargement.
all of the above.

Question: 3. Type 2 Tree Growth Regulators:
encourage the production of gibberellin.
decrease the production of abscisic acid.
help plants respond to environmental stresses.
all of the above.

Question: 4. Paclobutrazol is also known as:
a Type Two TGR.
Profile 2SC.
Cambistat®.
all of the above.

Question: 5. PBZ applications slow the growth of a tree by:
5 – 10 percent depending on the species.
10 – 30 percent depending on the species.
30 – 80 percent depending on the species.
none of the above.

Question: 6. Tree growth regulators alter the allocation of resources from the production of leaves to favor:
root growth.
survive insect and disease attacks.
withstand pollution and drought.
all of the above.

Question: 7. Tree growth regulators give protection from drought:
by encouraging thicker leaves.
by encouraging roots to gather and store more water.
by encouraging leaves have more trichome hairs covering the stomata.
all of the above.

Question: 8. PBZ in the soil:
does not bind to soil particles.
does not get into groundwater.
says in the soil below 16 inches.
all of the above.

Question: 9. Profile 2SC is:
injected into the ground and absorbed through the less suberized roots just below the soil line.
carried in the transpiration stream to the tree crown.
not highly mobile in soil and remains localized for up to 12 months.
all of the above.

Question: 10. Cambistat® is:
injected into the ground and absorbed through the less suberized roots just below the soil line.
carried in the transpiration stream to the tree crown.
not highly mobile in soil and remains localized for up to 12 months.
all of the above.

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