Home
Class 12
BIOLOGY
Microfossils often present in petroleum ...

Microfossils often present in petroleum producing formations are those of

A

Radiolarians

B

Diatoms

C

Helizoans

D

Foraminiferans.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

Fossil protists often associated with petroleum bearing rocks are

Which harmonics are present in the note produced from a pipe closed at one end?

At a particular temperature and pressure, the heat produced in the formation of 2 mol of C_(2)H_(6)(g) from the reaction between C_(2)H_(2)(g) and H_(2)(g) is 626 kJ. What amount of H_(2)(g) will react with the required amount of C_(2)H_(2)(g) to produce 939 kJ of heat at the same temperature and pressure?

Which moieties of nucleosides are involved in the formation of phosphodiester linkages present in dinucleotides? What does the word diester in the name of linkage indicate? Which acid is involved in the formation of this linkage?

Which one of the given reactions indicates the formation reaction of the compound produced in the reaction? (i) S (moochlinic,s) +O_(3)(g)toSO_(3)(g) (ii) C (graphite, s) +2H_(2)(g)toCH_(4)(g) (iii) N_(2)(g) +O_(2)(g) to 2NO(g) .

Assertion . Pili are tubular structures present in bacteria which help in conjugation Reason. Formation of pili is controlled by F^(+) or fertility factor.

Fill in the blanks : ________ of years are required for the formation of energy sources like coal or petroleum under the soil of earth.

Raw material used in formation of producer gas is

Name the gases which are present in producer gas.

[A] : One or many nucleoli are present in a nucleus . [R] :The nuclei of polyploids have more nucleoli than those of diploids .