Non-endospermic (exalbuminous) seeds fully utilize their endosperm during development, with cotyledons serving as storage organs at maturity. Among the options:
• Pea (B): Non-endospermic.
• Gram (C): Non-endospermic.
• Bean (D): Non-endospermic.
• Castor (A): Endospermic.
Therefore, the correct answers are (B), (C), and (D).