“integument”的概念、定义、翻译、参考文献-科学参考

integument

Biology

1. The outermost body layer of an animal, characteristically comprising a layer of living cells—the epidermis—together with a superficial protective coat, which may be a secreted hardened cuticle, as in arthropods, or dead keratinized cells, as in vertebrates (see skin).
2. The outer protective covering of a plant ovule. It is perforated by a small pore, the micropyle. Usually two integuments are present in angiosperms and one in gymnosperms. After fertilization the integuments form the testa of the seed.

单词	integument
释义	integument Biology 1. The outermost body layer of an animal, characteristically comprising a layer of living cells—the epidermis—together with a superficial protective coat, which may be a secreted hardened cuticle, as in arthropods, or dead keratinized cells, as in vertebrates (see skin). 2. The outer protective covering of a plant ovule. It is perforated by a small pore, the micropyle. Usually two integuments are present in angiosperms and one in gymnosperms. After fertilization the integuments form the testa of the seed.
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