Examlex
The type of reproductive isolation in which two populations are separated due to the sperm cells of one not being able to recognize the egg cells of the other is:
Triploid
An organism or cell having three sets of chromosomes, which is uncommon in most species and often leads to developmental abnormalities.
Angiosperm Seed
The reproductive unit of flowering plants, consisting of an embryo, nutritive tissue, and a protective outer coat.
Endosperm
A tissue in seed plants formed by the union of a sperm with two polar nuclei during fertilization, providing nutrition to the developing embryo.
Seed Coat
The outer protective layer of a seed that shields the embryonic plant from damage and disease.
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