LIST I (Microbe) | LIST II (Natural habitat) | ||
A. | Streptomyces | I. | Aquatic habitat |
B. | Influenza virus | II. | Terrestrial Environment |
C. | Spirulina | III. | Sewage treatment |
D. | Giardia | IV. | Airborne pathogen |
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: