The endosperm is completely consumed by the developing embryo in

The correct option is A

peas and groundnut

The correct option is A.

The explanation for the correct option:

1. The endosperm is a tissue layer surrounding the embryo and nourishes it for germination.
2. In pea and groundnut, the developing embryo in the seed completely absorbs the endosperm, and the food reserve gets stored in the cotyledons.

The explanation for the incorrect options:

Option B:

In maize and castor, storing the food materials is in their endosperm, and the endosperm is present even after the embryo's development.

Option C:

1. Castor seeds are albuminous seeds that store food in endosperm but not in cotyledons.
2. Groundnut seeds are ex-albuminous seeds. It stores food in cotyledons, and the developing embryo completely absorbs the endosperm.

Option D:

1. In maize, they store the food materials in their endosperm, and the endosperm is present even after the embryo's development.
2. In pea, the developing embryo in the seed completely absorbs the endosperm, and the food reserve gets stored in the cotyledons.

Final Answer: The endosperm is completely consumed by the developing embryo in peas and groundnut.