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  4. Diagram given below shows the stages in embryogenesis in a typical dicot plant (Capsella). Identify the structures A to D respectively

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Q. Diagram given below shows the stages in embryogenesis in a typical dicot plant (Capsella). Identify the structures A to D respectivelyBiology Question Image

Sexual Reproduction in Flowering Plants

Solution:

The given figure shows the stages in embryogenesis in a typical dicot (Capsella). The structure marked as A, B, C and D is respectively suspensor, radicle, plumule and cotyledon. Suspensor is a suspending part or structure as a group or chain of cells that is produced from the zygote of a seed plant and serves to push the developing embryo into the endosperm. Radicle is the part of a plant embryo that develops into the primary root. Plumule is the young shoot of a plant embryo above the cotyledons, consisting of the epicotyl and often of immature leaves. Cotyledon is an embryonic leaf in seed-bearing plants, one or more of which are the first leaves to appear from a germinating seed