What is a rooting hormone?

What will be an ideal response?


A rooting hormone is a chemical that reacts with the newly formed cells and encourages the plant to
make roots faster.

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How was Sir William Grove’s device constructed?

What will be an ideal response?

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____________________ are used to remove or install pressed-fit parts on shafts, like gears, bushings, and bearings.

Fill in the blank(s) with the appropriate word(s).

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Which crack detection technique requires the use of a blacklight?

A) Zyglo B) Magnetic flux C) Dye penetrant D) None of these

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A technician is checking the evaporator for leaks on an R-134a refrigerant system. Technician A says that it is acceptable to use shop air to pressurize the system and use an electrnic microphone to listen for leakage. Technician B says that it is acceptable to charge the system with R-134a and then insert the elctronic leak detector probe in the evaporator drain. Who is correct?

A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B

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