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Use of ICT. Find how the vestigial org...

Use of ICT.
Find how the vestigial organs in certain animals are functional in others. Present the information in your class and send it to others.

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i. Vestigial organs in humans:
a. Nictitating mebnerane (Third eyelid): In animals like frog, pigeon, etc. it is used for the protectionof eye. However, it is vestigial in man due to change in habitat and physiology of eye.
b. Caecum and vermiform appendix: In herbivores, it is used to digest cellulose. However, it is vetigialinman because, cellulose ofplant food slimplified during the process of cooking, thus there is no need to digest cellulose.
c. Auricular muscless (Muscles of ear pinna): These are functional in animals like rabbit, cow, horse, elephant, etc. Animals use these muscles to move their pinna in the direction of source of sound. However inma, it is vetigial and thus immovable.
ii. Vestigial organs in other animals:
Wings in ostrich and kiwi: Ostrich and kiwi are flightless birds hence their wings are vestigial.
iii. Vestigial organs in plants:
Scale like leaves of Indian pipe plant have lost its chlorophyll and become heterotrophic. Thus , such leaves which were otherwise used to prepare food in plants by photosynthesis, have become vestigial.
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