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Question

The wing in Pinus seed originates from

A
Integument
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B
Adaxial surface of ovuliferous scale
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C
Cone
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D
Bract scale
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Solution

The correct option is C Adaxial surface of ovuliferous scale
The wings of Pinus seeds originate from the dorsal or adaxial surface of the ovuliferous scale. Here, some of the surface tissue of the ovuliferous scale remain attached to the seeds to fo.rm membranous wings. At maturity the ovuliferous scales separate and the winged seed is released from the plant.
So, the correct answer is 'Adaxial surface of ovuliferous scale'

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