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 Chapter 6 Tissue  Here is the answer of chapter 6  Tissue  of NCERT science of class 9.The complete solution of CHAPTER 6 Tissue is given here which is prepared subject expert.  Block Questions Page No- 69 Ques 1. What is tissue? Ans. Tissue is a group of cells that are similar in structure and are organised together to perform specific task. Ques 2. What is the utility of tissue in multicellular organisms? Ans.  In unicellular organisms, a single cell performs all the basic function such as respiration,movement, excretion, digestion,etc. But in multicellular organisms, cells are grouped to form tissues. This tissues are specialized to carry  out a particular function at a place in the body. For example: the muscle cell form muscular tissue which help in movement, nerve cells form the  nervous tissue which helps in transmission of message.  This is known as division of labour that multicellular organisms. It is because of my division of labo...

 Chapter 5 The Fundamental Unit of Life Here is the answer of chapter 5  The Fundamental Unit of Life of NCERT science of class 9.The complete solution of CHAPTER 5 The Fundamental Unit of Life  is given here which is prepared subject expert. Block Questions.(page no.- 59) Ques 1. Who discovered cell and how? Ans. Robert Hooke discovered the cell. He observed the cell in a cork slice with the help of a primitive microscope. Ques 2. Why is cell called the structural unit of life? Ans. Cell constitute various component of plants and animals a cell is the smallest unit of life and is capable of all living functions. Cell are the building blocks of life. This is the reason why cell are referred to as the basic structural and functional unit of life. All cells varies in shape and size and activity they perform in fact, the shape and size of a cell is related to the specific functions they perform. Block Questions Page no- 61 Ques 1.How do substance like CO2 and water move in a...

 CHAPTER 1  MATTER IN OUR SURROUNDINGS Chapter 1 MATTER IN OUR SURROUNDINGS of SCIENCE NCERT of CLASS 9 complete solution and some important points are given. This will help student to better understand the topic and can easily solve the problems related to CHAPTER 1 MATTER IN  OUR SURROUNDINGS Class 9. SOME IMPORTANT POINTS OF CHAPTER 1  MATTER IN OUR SURROUNDINGS I) Melting point :- The temperature at which solid melts to became a liquid at the atmospheric pressure is called its melting point. II) Fusion :- The process of melting that is change of solid state into liquid states is also known as fusion. III) Latent Heat Of vapourisation:- The amount of heat energy that is required to change 1kg of liquid into gas(vapour) at its boiling point is known as latent heat of vapourisation. IV) Latent heat of Fusion :- The amount of heat energy that is required to change 1kg of solid into liquid at atmospheric pressure as its melting point is known as latent heat of Fus...