In the legume seed, food is stored in
Seeds, which store food materials in their cotyledons are called non- endospermic or exalbuminous seeds. Seeds, which store food materials in their endosperm are called endospermic or albuminous seeds. Legume seeds are dicotyledonous non- endospermic seed, so their stored food material is in cotyledons. So, the correct answer is 'Cotyledons'.