Answer :increased porosity
Explanation:
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The cell membrane is said to be selectively permeable is because it allows a select few things to go through while stopping the passage of other stuff.
When the organism is preserved in ice.
Double fertilization results in the formation of one diploid embryo and a triploid endosperm. Double fertilization is characterized by the formation of two embryos; the embryo proper which is diploid and the fusion product of the central cell with one male gamete which is triploid. This secondary triploid zygote develops into the endosperm.