Question

Clearly differentiate between the following pairs of words
(a) chromosomes and ribosomes
(b) cytoplasm and nucleoplasm
(c) cell wall and plasma membrane
(d) tissue and organ

Answer 1

(a)

Chromosomes	Ribosomes
They are present inside the nucleus.	They are present on the rough endoplasmic reticulum.
They carry hereditary information.	They are the protein factory of the cell.

(b)

Cytoplasm	Nucleoplasm
It is the jelly-like material in the cell outside the nucleus.	It is the jelly-like material present inside the nucleus.
It contain all the organelles, which are suspended in it.	It has chromosomes suspended in it.

(c)

Cell wall	Plasma membrane
It is the thick covering outside the cell membrane in plant cells.	It is the thin elastic covering present outside the cells.
It is permeable to all substances.	It is selectively permeable.

(d)

Tissue	Organ
It is a group of cells that together perform specific functions.	Various tissues together form an organ.
Examples: Muscle tissues and skin tissues.	Examples: Heart and stomach.