Question

define embryo and nucleus ​

Answer 1

a dense organelle present in all eukaryotic cells which are round like structure containing nucleoplasm is called nucleus

a informed or unhatched spring procuring the process of development in the human offspring in fertilisation is called embryo

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Answer 2

The past participle form of "choose" is "chosen" (which rhymes with "frozen"). A helping verb (such as " has," "have," or "had") usually comes before the past participle form "chosen." The present participle form of "choose" is "choosing" (which rhymes with "losing").