Ans . Tissue is a group of cells which are similar in structure and function , and performs a specific task . Q. 2 . How many types of elements together make up the xylem tissue ? Name them . Ans . ( i ) There are four types of elements which makes the xylem tissue .

Academic Biology NCERT Class 9. The primary difference between simple and complex tissue is that simple tissue is made up of only one type of cell whereas complex tissue is formed of many types of cells. Example: A simple tissue in animals is known as Epithelium whereas in plants it is known as Epidermis. Complex tissues are scattered.

KEY CONCEPTS The plant body is composed of individual cells that are organized into aggregates of cells called tissues. The cells of each tissue function as a unit. Simple tissues are composed of cells that are all of the same type. Complex tissues are composed of more than one cell type.

Question. Name two tissues that provide control and coordination in multicellular animals. Answer: The two tissues that provide control and coordination in multicellular animals are nervous and endocrinal tissues. Question. Mention the function of the hind-brain in humans. Answer: Hind-brain coordinates the body movements and posture. It also.