Practice question

Endospermic or albuminous seeds retain persistent endosperm at maturity as nutritive tissue for embryo derived from triple fusion forming triploid tissue that nourishes developing embryo. In such seeds cotyledons thin, food storage extracellular, seen in castor, coconut and cereals like wheat. Non-endospermic exalbuminous seeds consume endosperm during embryogenesis and store reserves in fleshy cotyledons as in pea and gram. Retaining only testa or lacking reserves not viable. Endosperm persistence thus distinguishes monocot albuminous grains from dicot exalbuminous legumes and correlates with germination strategies and seedling establishment ecology.