When a plant grows from an embryo, the embryonic organ that persists for the entire life of the plant is:
1. | cotyledon | 2. | hypocotyl |
3. | suspensor | 4. | seed coat |
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In the embryos of a typical dicot and a grass, true homologous structures are:
1. | Coleorhiza and coleoptile | 2. | Coleoptile and scutellum |
3. | Cotyledons and scutellum | 4. | Hypocotyl and radical |
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