What are the right ones?

Dear student, Please find below the solution to the asked query Two statements (A and C) are correct. Symbiotic nitrogen fixers occur in association with the plant. They are not freely found in soil. New cambium is not derived from pericycle. It originates from secondary cortex or phelloderm. Hope this information will clear your doubts about the topic. If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.