Cowslips are flowering plants - Edexcel - GCSE Biology - Question 1 - 2015 - Paper 1

To find the mean number of flowers per stem in the open grassland, we add up the total number of flowers and divide by the number of stems.

Calculating total flowers:

• From the graph:
  • 1 flower stem has 3 flowers
  • 2 flower stems have 3 flowers each
  • 3 flower stems have 2 flowers each
  • 4 flower stems have 4 flowers each
  • 3 flower stems have 3 flowers each
  • 2 flower stems have 2 flowers each
  • 1 flower stem has 1 flower
  • 1 flower stem has 5 flowers
  • 1 flower stem has 7 flowers
  • 1 flower stem has 8 flowers

Calculating total: $3 + (3 imes 2) + (2 imes 3) + (4 imes 4) + (3 imes 3) + (2 imes 2) + 1 + 5 + 7 + 8 \ = 3 + 6 + 6 + 16 + 9 + 4 + 1 + 5 + 7 + 8 = 67$

Now, divide by the number of stems (20): $ext{Mean} = \frac{67}{20} = 3.35$

Thus, the mean number of flowers per stem is approximately 3.35.