Which one is not a vestigial organ?

Wings of Kiwi

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Coccyx in man

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Pelvic girdle of python

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Flipper of seal

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Splint bone of horse

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Solution

The correct option is D Flipper of seal
Vestigiality refers to genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained through evolution. Assessment of the vestigiality must generally rely on comparison with homologous features in related species.
Wings of Kiwi, coccyx in man, pelvic girdle of python and splint bone of horse are vestigial organs as they are not functional now. Flipper of seal is not a vestigial organs as they are functional and used for swimming.

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Which one of the following statements is true?

(a) Head of humerus bone articulates with acetabulum of pectroral girdle.

(b) Head of humerus bone articulates with glenoid cavity of pectoral girdle.

(d) Head of humerus bone articulates with a glenoid cavity of pelvic girdle.

Read the following statements (1 - 2) and select the correct option.

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