Zoology - Evolution Question with Solution | TestHub
ZoologyEvolutionEvidences of EvolutionEasy2 minPYQ_2020
ZoologyEasysingle choice
In England, in 1920 (after industrialization) when a collection of moths was made, it was observed that:
Options:
Answer:
B
Solution:
Industrial melanism
- Industrial melanism is an observation made in England that supports 'evolution by natural selection'.
| Time of Moth Collection | Observation | Reason behind |
| 1850s (Before Industrialization sets in) | On trees, White- winged moths > Dark-winged (or melanised) moths | Before industrialisation, white-coloured lichen grow and almost covered the trees because of which white winged moth survived due to white background the but the dark -coloured moth were more spotted and picked up by the predators. |
| 1920s (After Industrialization) | On trees, Dark -winged moths > White – winged moths | Lichens do not grow in polluted areas, so the dark moths were able to camouflage (hide in the background) themselves against the tree trunks became dark due to industrial smoke and soots. Thus they survived in more numbers. White- winged moth were more spotted and picked up by the predators in comparison to the dark-winged. |
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:EvolutionSubtopic:Evidences of Evolution
⏱ 2mℹ️ Source: PYQ_2020
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