The correct answer is radicle. Key Points - The first step in the process of plant growth is seed germination. - The seed germinates when favourable conditions for growth exist in the environment. - In absence of such favourable conditions, the seeds do not germinate and go into a period of suspended growth or rest. - Once favourable conditions return, the seeds resume metabolic activities and growth takes place. - The root system begins its development from the embryonic root also called radicle, which grows out of the seed after the seed has absorbed water. - This is the primary root of a new plant. - The tip of the root is covered by a mass of loose cells called the root cap.