The organism in the environment

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Question 34
Medium

The diagram shows a hornet moth and a hornet.

A biological diagram showing a hornet moth on the left and a hornet on the right. Both have yellow and black striped abdomens.

Poplar aphids damage poplar trees by feeding on sucrose-rich phloem sap, which reduces the transport of carbohydrates to the roots. This can stunt tree growth because the root cells lack the carbohydrate needed to release energy for the absorption of mineral ions from the soil.

a.

Suggest why hornet moth larvae, which feed on the wood of poplar trees, need to consume carbohydrate.

[1]
b.

Name and describe the process used by root cells to absorb phosphate ions from the soil.

[2]
c.

Describe how magnesium ions are used to help plants grow.

[2]
d.

Hornets defend themselves from predators by using a painful sting, meaning predators avoid attacking them. Hornet moths are harmless and have no sting, but they look very similar to hornets.

Use your knowledge of natural selection to explain why hornet moths have evolved to look like hornets.

[4]

The organism in the environment Questions

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