Tapetal sentence example

tapetal
  • The archegonia are separated from one another, as in Pinus, by some of the prothallus-tissue, and the cells next the egg-cells (tapetal layer) contribute food-material to their development.
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  • A tapetal layer is derived from the cells surrounding the sporogenous group, and the arrest of a number of the spore-mother-cells further contributes to the nourishment of the remainder, each of which gives rise to four spores.
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  • The tapetal layer is partly formed from the sporangial wall and partly as a layer covering the trabeculae.
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