The table provides the proportion of dark and pale morphs of a moth species captured by birds from trees with dark and light coloured trunks.
|
Tree Trunk Colour |
Dark Morph |
Pale Morph |
|
Dark |
45% |
55% |
|
Light |
48% |
52% |
1
Natural selection favours dark morphs in forests where trees with dark trunks are dominant.
2
Birds can detect dark morphs better than light morphs.
3
Pale morphs prefer to rest on light coloured trunks.
4
Birds detect the moths by cues other than their wing colour
5
Question Not Attempted