What is the Difference Between Seed and Nut?

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The difference between seeds and nuts can be confusing, as some nuts are actually seeds and vice versa. However, there are some key distinctions between the two:

  • A seed is an embryonic plant that contains a tiny leaf, root, and stem, as well as an endosperm (a nutrient-rich food source for the emerging seed) and a protective casing.
  • A nut is a type of fruit with a hard shell containing an edible kernel. A true nut has a hard outer casing, such as hazelnuts, acorns, and chestnuts.

All nuts are seeds, but not all seeds are nuts. For example, although peanuts are commonly referred to as nuts, they are actually legumes, botanically closer to peas and lentils. Similarly, walnuts, almonds, pecans, and pistachios are not true nuts but rather the hardened endocarp of a drupe with the fleshy exterior removed.

In summary, the primary difference between seeds and nuts lies in their botanical structure and development. Seeds are embryonic plants with a protective casing, while nuts are fruits with a hard shell containing an edible kernel. However, the classification of some foods as nuts or seeds can be confusing due to colloquial usage and the removal of certain parts of the fruit.

Comparative Table: Seed vs Nut

Here is a table comparing the differences between seeds and nuts:

Feature Seeds Nuts
Definition A seed is a mature fertilized ovule of a plant, consisting of three parts: the embryo, the endosperm, and the seed coat. A nut is a hard-shelled fruit of certain plants, often containing an edible kernel surrounded by a shell.
Structure Seeds are typically small and enclosed in a seed coat. Nuts generally have a hard outer shell that doesn't crack open naturally.
Examples - Beech mast (produced by the beech tree)
- Peanuts (not true nuts, but legumes)
- Brazil nuts (edible seeds of the Brazil nut tree)
- Almonds
- Walnuts
- Chia seeds (botanically seeds, but often consumed like nuts)
Nutrition Most seeds and nuts are rich in protein, vitamins, minerals, healthy fats, and fiber. Each nut or seed variety offers a unique nutrient profile.
Growth Seeds generally come from plants and can grow into a new plant when planted in the right conditions. Nuts are the fruit of certain plants and can contain a single seed or multiple seeds.

Keep in mind that the terms "nut" and "seed" can sometimes be used interchangeably, and some foods that are commonly referred to as nuts are actually seeds.