Plant KingdomHard
Question
The ′wing′ of Pinus seed is derived from
Options
A.testa
B.testa and tegmen
C.surface of ovuliferous scale
D.All of the above
Solution
Seed of Pinus is endospermic, perispermic, diploid, ploycotyedonous, winged and naked (without fruit). The wing of seed is thin, membranous diploid and develops jointly from the basal upper surface (adaxial) of ovuliferous scale and outer layer of integument of the ovule.
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