List I | List II | ||
A. | Green house gases | I. | Snow blindness |
B. | Electrostatic precipitation | II. | Unleaded petrol |
C. | Catalytic converter | III. | Thermal power plant |
D. | UV_B radiation | IV. | Global warming |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct answer from the options given below: