Question

what is tissues ????​

Answer 1

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the mass of cells that form the bodies of humans, animals and plants is called tissues.

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Answer 2

Answer:

• all living organisms are made up of cells. depending upon the number of cells present in an organism, they are categorised as unicellular or multicellular. in unicellular organism such as amoeba,a single cell performs all the vital functions of the body such as intake of food, gaseous exchange, respiration, excretion, etc. whereas in multicellular organisms there are millions of cells among which there is a division of labour. different cells perform different specialised functions in later. for example, in human, muscle cells contract and relax to cause movement of a body part, neurones carry messages, blood transports oxygen, food, hormones and waste materials to all parts of the body. similarity in plants vascular tissues, i.e phloem and xylem transport food and water respectively from one part to other parts.different shape, size, and structure and function.
• cells. specialised for a particular function are grouped together in the body this group of cells called the tissues are arranged and designed so as to give the highest possible efficiency of functions.
• a group of cells that are similar or dissimilar in function but similar in origin which work together to perform a particular function is called tissue. blood, phloem, muscles etc are examples of different tissues.