Biology
Given below are two stages in the evolution of man. Study them and answer the questions that follow:
(i) Identify Australopithecus and Neanderthal man from the above pictures.
(ii) Mention two characteristic features each for the two stages.
(iii) Who proposed the theory of 'Natural Selection'?
(iv) Name the organism used as an example to explain 'Industrial Melanisum'.
(v) Give two examples of vestigial organs in humans.
Human Evolution
ICSE 2019
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Answer
(i) Picture A → Neanderthal man, Picture B → Australopithecus.
(ii) Two characteristic features of each are:
- Neanderthal man — Height 160 cm, semi erect stooping posture, Cranial capacity 1450 cm3
- Australopithecus — Height 120 cm, nearly upright posture, Cranial capacity 450 to 600 cm3
(iii) The theory of 'Natural Selection' was proposed by Charles Darwin.
(iv) Peppered moth (Biston bitularia) was the organism used as an example to explain 'Industrial Melanisum'.
(v) Two examples of vestigial organs in humans are:
- Vermiform Appendix
- Wisdom tooth
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