Identify the correct pair of statemetns. I. Functions of sieve tubes are controlled
Channel: Doubtnut
Date: 2020-05-03

Identify the correct pair of statemetns. I. Functions of sieve tubes are controlled by the nucleus of companion cells.  II. Albuminous cells are present in angiosperms.  III. In dicot root, the vascular cambium is completely secondary in origin.   IV. Cylindrical meristems contribute to the formation of primary plant body.