Question

Most of the petrocrops belong to family

• A. Malvaceae
• B. Rutaceae
• C. Leguminosae
• D. Euphorbiaceae

Answer 1

Answer: (D)

Euphorbiaceae

Answer 2

Malvin Calvin found that certain plants of family-Euphorbiaceae convert a substantial amount of photosynthate into latex containing liquid hydrocarbon, which are potential substitutes for petroleum, eg, Hevea brasiliensis, Euphorbia abyssinica etc and some of the plants of family-Asclepiadaceae, Apocynaceae, Leguminosae, Sapotaceae, Mosaceae, Dipterocarpeceae and Compositae. Dead serum of the algae Botryococcus braunii also contains about $70\%$ hydrocarbon closely resembling the crude oil. Most of it is located on cell wall and can be recovered by centrifugation.