Question
The terminal cell of the 2- celled proembryo divides by
longitudinal wall and the basal cell and terminal cell both contribute to the development of embryo inSolution
Six embryogeny types have been defined based on the sequence of divisions of the basal and terminal cells and which cell derivatives contribute to the mature embryo: 1.Asterad Type: •Terminal cell divides longitudinally. •Both basal and terminal cell derivatives contribute to mature embryo. 2.Caryophyllid Type: •Terminal cell divides transversely. •Only terminal cell derivatives contribute to mature embryo. 3.Chenopodiad Type: •Terminal cell divides transversely. •Both basal and terminal cell derivatives contribute to mature embryo. 4.Crucifer or Onagrad Type: •Terminal cell divides longitudinally. •Only terminal cell derivatives contribute to mature embryo. 5.Solanad Type: •Terminal cell divides transversely. •Basal cell derivatives form a suspensor but do not contribute to mature embryo development. 6.Piperad Type: •Zygote divides longitudinally. •Does not form basal and terminal cells.
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