Ruminate endosperm is commonly found in seeds of- A. Annonaceae (Areca nut)B. CrucifaraeC. CompositaeD. Euphorbiaceae

The correct answer is D. Euphorbiaceae.
What is Ruminate Endosperm?
o Ruminate endosperm refers to a type of endosperm found in some seeds where the tissue is deeply folded or "ruminated," resembling a jagged pattern.
o This structure allows for the storage of food reserves, mainly starch, proteins, and oils, and is typically observed in certain plant families.
Family Euphorbiaceae:
o The Euphorbiaceae family, which includes species like castor, manihot (cassava), and jatropha, is known for seeds that often exhibit ruminate endosperm.
o Examples:
 Castor bean (Ricinus communis): Castor seeds have ruminate endosperm.
 Jatropha: Seeds from this plant also show ruminate endosperm.
Why Not the Other Families?:
o A. Annonaceae (Areca nut): While Areca nut (betel nut) belongs to the Annonaceae family, its seeds do not typically exhibit ruminate endosperm.
o B. Cruciferae (Brassicaceae): This family includes plants like mustard and cabbage, which have a different type of endosperm structure, not ruminate.
o C. Compositae (Asteraceae): The seeds of the Compositae family (e.g., sunflowers) do not have ruminate endosperm but may have different forms of food storage.
Conclusion:
The Euphorbiaceae family is most commonly associated with ruminate endosperm in seeds, making the correct answer D. Euphorbiaceae.