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Question
Read the following statements (1 - 2) and select the correct option.
1 : Splint bones of present day horse is vestige of fourth toe.
2 : Vestigial organs occur as useless organs because of complete development.
Read the following statements (1 - 2) and select the correct option.
1 : Splint bones of present day horse is vestige of fourth toe.2 : Vestigial organs occur as useless organs because of complete development.
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Solution
The correct option is B Both statement 1 and 2 are incorrect
Organs which are present in reduced form and do not perform any function in the body but correspond to fully developed functional organs of related animals are called vestigial organs. They are believed to be remnants of organs which were complete and functional in their ancestors.
Splint bones are vestigial organs formed due to fusion of second and fourth metacarpal (forelimbs) or metatarsal (hindlimbs) bones which function as weight-bearing bones in modern horse. Hence statement 1 is incorrect.
Vestigial organs are considered near -to- useless organs because of incomplete development. Hence statement 2 is incorrect.
Figure : Splint bone
Organs which are present in reduced form and do not perform any function in the body but correspond to fully developed functional organs of related animals are called vestigial organs. They are believed to be remnants of organs which were complete and functional in their ancestors.
Splint bones are vestigial organs formed due to fusion of second and fourth metacarpal (forelimbs) or metatarsal (hindlimbs) bones which function as weight-bearing bones in modern horse. Hence statement 1 is incorrect.
Vestigial organs are considered near -to- useless organs because of incomplete development. Hence statement 2 is incorrect.
Figure : Splint bone
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