In grafting, what is the upper part of the plant called?

The xylem and phloem are permanent simple tissues. 

What is the retic count if 25 retics are counted out of 1000 total red cells?

How many (sp3-sp3) sigma bonds in the acetic acid, CH3CO2H?

If 74 retics are counted in the large square of a Miller disk and 620 red cells are counted in the small square, what is the retic count?

Select all of the following that are true about fatty acids and lipids. 

Root growth patterns are always year-round with no resting period in all plant species.

Match the tissue type with its description.

Which type of germination involves cotyledons being pushed above ground?

Cedar Co. issued a $50,000, 120-day, discounted note to Guarantee Bank. The discount rate is 6%. Assuming a 360-day year, the cash proceeds to Cedar are