The Seed

In monocotyledons the seeds are generally endospermous. The internal structure of grain can be studied in a longitudinal section. It shows two distinct regions upper large region, the endosperm and lower smaller region, the embryo. The endosperm is surrounded by a special one cell thick layer, called aleurone layer. It is filled with aleurone grains which are proteinaceous in nature. Other components of this layer are phytin, carbohydrates and small amounts of phospholipids are also present,

Coconut fruit is a drupe. It has a membranous epicarp, fibrous mesocarp and stony endocarp. The endocarp encloses a single seed with brown testa that contains a small embryo and a white oily endosperm (edible part) with watery fluid called coconut water.

The correct option is (D): Gibberellin.

The correct option is (C): Being a diploid tissue.

The correct option (B): A proteinaceous aleurone layer is present in maize grain.

The correct option is (C): Endosperm.

Answer (b) b

In the seeds of cereals, the aleurone layer is the protein-rich outer covering of the endosperm. This layer is crucial in storing proteins and plays a significant role in seed germination. The aleurone layer is situated just below the seed coat and surrounds the endosperm, which provides nutrients to the embryo during germination. Thus, the correct answer is Aleurone layer.