Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The ovary of mustard is initially one-chambered but becomes two-chambered. Reason (R): Mustard exhibits parietal placentation where a false septum develops. In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step solution

In mustard and Argemone, the placentation is parietal. The ovules develop on the inner wall of the ovary or on the peripheral part. The ovary is initially one-chambered, but it becomes two-chambered due to the formation of a false septum (replum). Thus, both Assertion (A) and Reason (R) are true, and the development of the false septum in parietal placentation is the exact anatomical reason why the ovary becomes two-chambered. Answer: Both Assertion (A) and Reason (R) are correct and Reason (R) is the correct expla