Plant seedlings are young, immature plants that have recently germinated from a seed. They are in an early stage of growth and typically consist of:

* **Radicle (primary root):** The first part to emerge from the seed, anchoring the seedling and absorbing water and nutrients.

* **Hypocotyl:** The stem segment below the cotyledons and above the root.

* **Cotyledons (seed leaves):** The first leaves to appear, often looking different from the true leaves. They store food reserves from the seed and/or perform photosynthesis until the true leaves develop.

* **Epicotyl:** The stem segment above the cotyledons, from which the first true leaves will emerge.

* **Apical Meristem:** The growing tip of the shoot, responsible for producing new leaves and stem tissue.

During this vulnerable stage, seedlings are highly dependent on adequate light, water, temperature, and nutrients for successful development into mature plants. They are often grown in controlled environments like nurseries or seed trays before being transplanted.