Question

20. Match the entries of Column 1 with those of Column 2.

Column 1	Column 2
Cell theory	Disposal of waste from the cell
Plasmolysis	Conduction of nerve impulses.
Nerve cell	Packing and forwarding
Exocytosis	Schleiden and Schwann
Golgi complex	Shrinking of cell

Answer 1

A) Cell theory (iv) Schleiden and Schwann

Cell theory was proposed by Schleiden and Schwann and later modified by Rudolf Virchow.

(B) Plasmolysis (v) Shrinkage of cells

Plasmolysis is defined as the process of shrinkage of cytoplasm as a result of the loss of water from the cell.

(C) Nerve (ii) Conduction of nerve impulses

1. Neve cells are the basic unit of communication in the nervous system.
2. Nerves conduct impulses and transmit them to the next nerve.

(D) Exocytosis (i) Disposal of waste from the cell

1. The process by which materials move from inside to outside of the cell is known as exocytosis.
2. This is useful in releasing the secretory and excretory materials from the cell.

(E) Golgi complex (iii) Packing and forwarding

1. Golgi apparatus is a membranous structure that originates from smooth ER. It is also formed of cisternae, vacuoles and vesicles.
2. Golgi apparatus is chiefly concerned with the function of secretion of enzymes and other substances.

Column 1	Column 2
(A) Cell theory	(iv) Schleiden and Schwann
(B) Plasmolysis	(v) Shrinkage of cells
(C) Nerve	(ii) Conduction of nerve impulses
(D) Exocytosis	(i) Disposal of waste from the cell
(E) Golgi complex	(iii) Packing and forwarding