On one oak tree, there were two types of
caterpillar. All the caterpillars were eating
the leaves.
Answer the following questions.
a) The number of gypsy moth caterpillars increased. What will happen to the number of
orange-striped caterpillars? Explain your answer.
b) There are no caterpillars on the oak tree in winter. Suggest a reason for this.
Answers
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(a) If they both eat the same thing then you would expect a decrease in the number of orange-stripped caterpillars. If they don't then there might be an increase as there are more gypsy moth caterpillars for the predators to eat. Otherwise it likely have no effect on the orange-stripped caterpillars.
(b) There are not caterpillars in winter because many oak trees lose their leaves over the winter, so there is a scarcity. The lifecycle of caterpillars (butterflies and moths) is to hatch when there is food available. Some caterpillars hibernate during the winter to survive. Thus that is why we don't see caterpillars in the winter.
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