Write three inferences deduced from the observations as mentioned in Darwin’s theory of origin of new species by natural selection with the help of a table. Explain the problem-solving ability of Chimpanzee regarding procurement of food. [3 + 2]
WBBSE
Class X
Life Science
04 (a) Evolution
04 (b) Adaptation
05 Mark
2025
| Observation | Inference |
|---|---|
| Prodigious reproduction | There is a struggle for existence due to limited resources |
| Limited resources | Individuals with favourable variations survive and reproduce (“survival of the fittest”) |
| Variations | Variations are the raw material for natural selection. |
Chimpanzees show intelligent behaviour for food
Chimpanzee defoliates twig tip and crushes it to form brush-like tool, inserts into termite mound to extract termites for eating; also breaks nuts using stones (hammer-anvil technique) to access edible seeds.
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