Sparrows have mostly cones in their retina. The rods are mainly responsible for the night vision hence the number of the rods is very less thus the night vision is poor.
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32.Give one function of pinna?
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33.Name the enzyme present in tears.
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34.What is brain stem ?
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35.Which structure is responsible for the colour of eye ?
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36.Define the terms ganglion.
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37.What is perilymph?
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38.The term for the electrical potential difference across the resting plasma membrane.
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