Paper 2 H - SAMPLE SET 1 Q20 Answers
20) In many countries people rely on bananas for food.
Black sigatoka is a disease of banana plants.
It is caused by a fungus.
(a) Explain how the food security/growth of bananas could be improved:
(i) by using fungicide. [1]
(ii) by using selective breeding. [3]
(b) Scientists have been investigating the conditions needed for the fungus to grow.
They compiled this data.
Black sigatoka is a disease of banana plants.
It is caused by a fungus.
(a) Explain how the food security/growth of bananas could be improved:
(i) by using fungicide. [1]
(ii) by using selective breeding. [3]
(b) Scientists have been investigating the conditions needed for the fungus to grow.
They compiled this data.
Write in the boxes how well the fungus will grow in these conditions. [2]
(c) Scientists have tried to predict the effect of climate change on the growth of the fungus.
They have used four different predictions for how the climate might change, A, B, C and D.
They then tried different ways of calculating where the fungus cannot grow.
Their results are shown in the table.
They have used four different predictions for how the climate might change, A, B, C and D.
They then tried different ways of calculating where the fungus cannot grow.
Their results are shown in the table.
(i) Which climate model produces the lowest range of results in the four calculations? Choose from A, B, C or D. [1]
(ii) At present the fungus cannot grow over 86.4% of the World. What do the calculations predict about the effect of climate change on the fungus? [1]
(d) Scientists are developing a genetically engineered banana plant.
This would be resistant to black sigatoka.
Look at the newspaper headline from an African newspaper.
(ii) At present the fungus cannot grow over 86.4% of the World. What do the calculations predict about the effect of climate change on the fungus? [1]
(d) Scientists are developing a genetically engineered banana plant.
This would be resistant to black sigatoka.
Look at the newspaper headline from an African newspaper.
In Europe, police have been used to guard genetically engineered crops from protesters. Suggest why the protesters in Europe want to destroy the crops and why the response in Africa is so different. [2]
(Total for Question 20 = 10 marks)
(Total for Question 20 = 10 marks)
Answers
