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Dicot seed

Monocot seed

1. It is a true seed developed from the ovule and is formed inside the fruit.

1. The seed is known as the grain which is represented by the seeded fruit known as the caryopsis.

2. The seed coat is distinct from the fruit coat or pericarp

2. The seed coat is fused with the pericarp.

3. The seed encloses two cotyledons.

3. The seed encloses only a single cotyledon which is known as the scutellum.

4. The seed coat is differentiated into outer testa and inner tegma.

4. The seed coat is unilayered and is inseparable from the pericarp.

5. The seeds may or may not possess endosperm so they are known respectively as the endospermic or non-endospermic dicot seed.

5. Most of the monocot members possess endospermic grains.

6. Presence of the distinct structures like the hilum, raphe and micropyle.

6. The hilum, raphe and micropyle are absent.

7. The two cotyledons enclose the embryonic axis in between them.

7. The grain is divided internally into two distinct parts the by epithelium.

8. In the endospermic seed the endosperm encloses the embryo.

8. The endosperm is found above the embryo. The endosperm and the embryo are separated  by the epithelium.

9. The embryonic axis is divided into the hypocotyl and the epicotyl.

9. The hypocotyl and epicotyl are absent.

10. The plumule and the radicle are unprotected.

10. The plumule is protected by the coleoptile and the radicle by the coleorhiza.

11. Reserve food material is stored in the cotyledons and is used up at the time of seed germination.

11. The reserve food material is stored in the endosperm which is passed to embryo through the cotyledons.