Question

Petroleum yielding plants or petroplants belongs to family of
A) Apocynaceae
B) Asclepiadaceae
C) Euphorbiaceae
D) All of the above

Answer 1

Hint:There are very different species of some families which collect the photo-synthetic products which are known as hydrocarbons. Hydrocarbons have high molecular weight (10,000). They are normally known as petroplants or petroleum plants. Dr. M. Calvin of the University of California In 1979 found the first time the gathering and use of photosynthetically produced hydrocarbons from the plants.

 Complete answer:
Calvin, he suggested hydrocarbons for conventional petroleum sources.
Latex of some plants having long chain hydrocarbons which is the good alternative for liquid fuels or petroleum.
These plants having huge amounts of latex with long chain hydrocarbons are called petroplants.
Cultivation of petroleum is done by energy cropping. About fifty year ago cultivation of these petrocrop was initially done by Italians in Ethiopia.
 Family of petro plants Euphorbiaceae, Asclepiadaceae, Apocynaceae, Compositae, Labiatae, Sapotaceae, urticaceae etc.
These family plants have the ability of converting large amounts of their photosynthesis into latex collect as hydrocarbons.
Hence, the correct answer is option ‘D’ All of the above.

Note:In the petroplants lactiferous canals are present which release the milky latex. The latex can be either continuously tapped and stored or extracted by using the organic solvents. The product rich in hydrocarbon is known as 'biocrude'. Biocrude yields about 70.6% energy ; which contains 22% as kerosene and 44.6% as gasoline.