Endosperm is a tissue produced inside the seeds around fertilization and surrounds the embryo.

Endosperm is a tissue produced inside the seeds around fertilization and surrounds the embryo.

• A. Outer Layer of Seed Coat
• B. A Tissue Produced Inside Seeds Around Fertilization
• C. Inner Layer of Seed Coat
• D. A Scar on Seed Coat

Answer: (B)

Recognizing what endosperm is and where it forms inside the seed helps you answer this. Endosperm arises after double fertilization in flowering plants: one sperm fuses with the two polar nuclei to form a triploid tissue that becomes endosperm. This tissue develops inside the seed, surrounding the embryo, and provides nutrients during germination. In many seeds it remains as storage tissue in the mature seed, though in some species the embryo uses it as it matures and the endosperm is absorbed. The other descriptions describe parts or features of the seed coat or a surface mark, not a nutrient tissue inside the seed. The endosperm is not part of the outer or inner layers of the seed coat, and it is not a scar on the seed coat.

Recognizing what endosperm is and where it forms inside the seed helps you answer this. Endosperm arises after double fertilization in flowering plants: one sperm fuses with the two polar nuclei to form a triploid tissue that becomes endosperm. This tissue develops inside the seed, surrounding the embryo, and provides nutrients during germination. In many seeds it remains as storage tissue in the mature seed, though in some species the embryo uses it as it matures and the endosperm is absorbed.

The other descriptions describe parts or features of the seed coat or a surface mark, not a nutrient tissue inside the seed. The endosperm is not part of the outer or inner layers of the seed coat, and it is not a scar on the seed coat.