Produce a large drawing of the flower exactly as it appears in Fig. 1.1 in the space below.
On your drawing, add a line labelled P to indicate where pollen should land during pollination.
Draw a table below to record the student’s test results.
When the tests were finished, the student recorded: • part A gave a positive result with Benedict’s solution and negative results with biuret reagent and iodine solution. • part B gave positive results with biuret reagent and iodine solution and a negative result with Benedict’s solution. In the table you have drawn, write the colours that the student would have seen at the end of each test.
State the nutrients found in: part A ................................................................. part B .................................................................
Measure the diameter of the pollen grain at its widest point and record it. diameter ............................................................. mm
Calculate the diameter of the actual pollen grain and give your answer to 2 decimal places. Space for working. diameter of the actual pollen grain .............................................................
Describe two visible differences between the pollen grains in Fig. 1.2 and Fig. 1.3.