The organism in the environment

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Question 27
Medium

An investigation was conducted to study the effect of temperature on the germination rate of Scots pine (Pinus sylvestris) seeds. Five Petri dishes were prepared for each of five different temperature conditions: 5∘C5^\circ\text{C}5∘C, 12∘C12^\circ\text{C}12∘C, 19∘C19^\circ\text{C}19∘C, 26∘C26^\circ\text{C}26∘C, and 33∘C33^\circ\text{C}33∘C. Each Petri dish initially contained exactly 50 seeds placed on moist filter paper. After 14 days, the number of successfully germinated seeds in each dish was recorded.

The table below shows the results of this investigation:

Temperature (∘C^\circ\text{C}∘C)Dish 1Dish 2Dish 3Dish 4Dish 5Total number of germinated seeds
53425216
12182119172095
194245414344215
26323053133131
33102115
a.

Identify the anomalous result in the table and suggest a possible biological or experimental reason for this anomaly.

[2]
b.

Explain why the results of this experiment can be considered reliable.

[2]
c.

Describe the results shown in the table and state a conclusion for this experiment.

[3]

The organism in the environment Questions

  1. IGCSE
  2. /Biology
  3. /The organism in the environment