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What is nictitating membrane? Give its function.
Name the following (a) Organism in which external ear (pinna) is present (b) Organism in which nictitating membrane is present.
Wings are vestigial in
Which of the following statements are correct with reference to the frog ? I. Eyes are bulged and covered by nictitating membrane. II. Membranous tympanum recieves the sound signals. III. The frog never drinks water. IV. A pair of nostrils is present above the mouth.
Which one is vestigial in humans ?
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Which is vestigial in humans ?
Which one is not vestigial ?
DINESH PUBLICATION-EVIDENCES OF EVOLUTION-CHECK YOUR GRASP