Step 1: A dicotyledonous embryo is the early stage of a dicot plant, which contains two cotyledons (seed leaves).
Step 2: The diagram should show the following parts: 1. Cotyledons: The seed leaves that store food. 2. Radicle: The part that develops into the root. 3. Plumule: The part that develops into the shoot. 4. Hypocotyl: The region below the cotyledons, forming the stem. 5. Epicotyl: The region above the cotyledons that forms the upper part of the stem. % Diagram to be inserted here.
Mention the events related to the following historical dates:
\[\begin{array}{rl} \bullet & 321 \,\text{B.C.} \\ \bullet & 1829 \,\text{A.D.} \\ \bullet & 973 \,\text{A.D.} \\ \bullet & 1336 \,\text{A.D.} \\ \bullet & 1605 \,\text{A.D.} \\ \bullet & 1875 \,\text{A.D.} \\ \bullet & 1885 \,\text{A.D.} \\ \bullet & 1907 \,\text{A.D.} \\ \bullet & 1942 \,\text{A.D.} \\ \bullet & 1935 \,\text{A.D.} \end{array}\]