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Observe this diagram of L.S. of embryo of grass. Which of these labels represent the functional cotyledon and Rudimentary cotyledon?
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The correct answer is:
Functional cotyledon: A, Rudimentary cotyledon: D
The correct labels of this diagram are
In this scutellum is the functional cotyledon while epiblast which is a flap lie structure represents the rudimentary cotyledon. Embryos of monocotyledons possess only one cotyledon. In the grass family the cotyledon is called scutellum that is situated towards one side (lateral) of the embryonal axis. At its lower end, the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called coleorrhiza. The portion of the embryonal axis above the level of attachment of scutellum is the epicotyl. Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure, the coleoptile.
In this scutellum is the functional cotyledon while epiblast which is a flap lie structure represents the rudimentary cotyledon. Embryos of monocotyledons possess only one cotyledon. In the grass family the cotyledon is called scutellum that is situated towards one side (lateral) of the embryonal axis. At its lower end, the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called coleorrhiza. The portion of the embryonal axis above the level of attachment of scutellum is the epicotyl. Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure, the coleoptile.
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