The megasporangium in a pine cone is surrounded by an integument with a small opening called the micropyle.
Integuments in flowers are the maternal tissues or having a maternal beginning, as they originate from the ovular tissue or chalazal tissue (part of the lady reproductive gadget of a flower). A time period integument merely refers to the protecting layer. In terms of botany, an integument is a layer encircling the ovule.
A mature ovule consists of a meal tissue included by means of one or destiny seed coats, called integuments. A small establishing (the micropyle) within the integuments permits the pollen tube to enter and discharge its sperm nuclei into the embryo sac, a large oval cellular in which fertilization and improvement arise.
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cell wall
the main difference between animal cell and plant cell is in existing of cell wall on plant cell and existing of centriols in animal cell large vacules in plant cell ...
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