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| phase in plant life which starts with a zygote produced by sexual reproduction |
| organisms having pairs of homologous chromosomes |
| raphide (rā'fīd) Pronunciation Key
Plural raphides (rāf'ĭ-dēz') One of a bundle of needlelike crystals of calcium oxalate occurring in many plant cells. The crystals discourage animals from eating the plant by irritating their tissues. |