Cells connected by plasmadesmata form a system

Cells are connected by plasmodesmata, the system is called:

Membranes of ER and other cell organelles interconnected to form a system known as ____.

Tend identical cells each of potential E and internal resistance r are connected in series to form a closed circuit. An ideal voltmeter connected across three cells, will read

Ten identical cells each of e.m.f. E and internal resistance r are connected in series to form a closed circuit. An ideal voltmeter connected across three cells, will read

Assertion: Fusiform cells are elongated and tapering cells. Reason: These cells form axial system consisting of vascular rays.

Assertion: Fusiform cells are elongated and tapering cells. Reason: These cells form axial system consisting of vascular rays.

Which among the following is correct ? (i) apoplast is fastest and operate in non-living part (ii) Transmembrane route includes vacuole (iii) symplast interconnect the nearby cell through plasmadesmata (iv) symplast and transmembrane route are in living part of the cell