9th SCIENCE and Mathematics NCERT SOLUTIONS

9TH SCIENCE NCERT SOLUTIONS
Chap 6 - TISSUES              

  IX Mathematics NCERT Solutions





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A. Answer these questions 1. Name the three life process help living being to procure energy from food? Answer: Three life processes that help living organisms to procure energy from food are: (i) Digestion (Nutrition) (ii) Respiration (iii) Transportation 2. What are Autotrophs? Name an organism other than other than green plant that is an autotroph. Answer: Autotrophs are organisms that can prepare their own food. Chlamydomonas is a type of green algae which is an example of an autotroph, other than green plants. Cyanobacteria are also an example of autotroph. 3. Name three type of heterotrophic nutrition Answer: Three types of heterotrophic nutrition are: (i) Saprophytic nutrition (ii) Parasitic nutrition (iii) Holozoic nutrition 4. What are enzymes? Answer: Enzymes are chemical substances that act as biological catalysts and are important for carrying out biochemical processes, such as digestion, in our body ...
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IX Maths: Coordinate Geometry: Assignment

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Importatant Terms, Definitions and Results To locate the position of an object or a point in a plane, we require two perpendicular lines, one of them is horizontal and the other is vertical. The horizontal line is called the x-axis and the vertical line is called the y-axis. We call the plane, the cartesian plane, or the coordinate plane or the xy-plane. The axes are called the coordinate axes. The point of intersection of the axes (x-axis and y-axis) is called the origin. The coordinate axes divide the plane into four parts, called quadrants. The distance of a point from the y-axis is called its x-coordinate or abscissa. The distance of a point from the x-axis is called the y-coordinate or ordinate. If x ≠ y, then the position of (x, y) in the cartesian plane is different from the position of (y, x). It means the order of x and y is important in (x, y). Therefore, (x, y) is called an ordered pair.  A point in a plane can be represented by an ordered pair (x, y), wher...
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WHY DO WE FALL ILL CLASS-IX STUDY MATERIAL 1. Define health. Ans. Health is defined as the state of complete physical, mental and social well being. 2. What is disease? Ans. Disease is a departure from normal health through structural or functional disorder of the body. 3. What is the most important factor that keeps us healthy? Ans. Our social environment is an important factor in our individual health. 4. List any two conditions essential for good health. Ans. Conditions essential for good health are: i. to have a balanced diet and varied diet. ii. avoid wrong habits like drinking alcohol and drug consumption. 5. List any two conditions essential for being free of disease. Ans. Conditions essential for being free of disease are: i. maintain personal hygeine. ii. keep environment clean and hygiene. 6. Give examples of diseases which are caused by intrinsic sources and extrinsic sources. Ans. Diseases caused by intrinsic sources:  Hea...
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