9th SCIENCE and Mathematics NCERT SOLUTIONS

Trend Setter Questions with Solutions : Diversity in Living Organisms more than 150 solved Questions One Mark Questions: 1) What is biological classification ? Ans: Grouping of organisms based on similarities & dissimilarities is called biological classification. 2) What is Taxonomy ? Ans: The systematic study of identification classification and naming of oraganisms is called taxonomy. 3) Who made 1st attempt for scientific basis of classification ? Ans : Aristotle. 4) On what morphological criteria Aristotle classified the plants ? Ans : Based on the morphological nature of the stem. 5) Based on the nature of the steam name the types of plants classified by Aristotle. Ans: Herbs, Shrubs & Trees. 6) Name the 2 kingdoms of classification ? Ans: (1) Plantae & Metaphyta (2) Animatia Metazoa 7) What are prokaryotas ? Ans: The organisms which do not have well organized nucleus in their cell are called prokaryotes. OR Organisms co...

Obtaining and Utilization Food Class 7 Science Solved question (Basic Science Questions answers)

April 02, 2015

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 ...

Class9 Biology chapter Cell the Fundamental unit of life :Assignment solved

April 12, 2015

1. What is plasma membrane? What are their functions? Ans: Plasma membrane also called as cell membrane, is the outer covering of a cell that separates the cell contents (protoplasm) from the surrounding medium. It is made up of proteins and lipids. It gives form (shape and size) to the cell It maintains the individuality of the cell (i.e. seperates cells) It keeps the cell contents in place 2. What are cell organelles ? Ans: The certain specific living parts of a cell with a definite function are celled Cell organelles. All cell are found to have same organelles and together these constitute to the basic unit of life. 3. What is cellulose and its functions? Ans: Cellulose is the main component of a plant cell wall. It is responsible for giving structural shape to the cell and also to protect the protoplasm. 4. What is a Prokaryotic cell? Give an Example. Ans: The cells that do not hav...

CBSE NCERT Management of Natural Resources Notes Biology 10th

October 29, 2013

Natural Resources: Anything in the environment ‘which can be used’ is called ‘natural resource’. Natural resources include total natural environment that support human life and contribute to the production of necessities and comforts to mankind. So natural resources are the components of atmosphere, hydrosphere and lithosphere. On the basis of abundance and availability, the natural resources are of two types: (a) Inexhaustible (b) Exhaustible. (a) Inexhaustible. These are in plenty and cannot be exhausted by man’s consumption e.g., air, sand, clay etc, affected by over-population of mankind. (b) Exhaustible. These are limited and can get exhausted over a period of time. i.e., coal, petroleum etc. Management of Natural Resources A system of controlling the use of natural resources in such a way as to avoid their wastage and to use them in the most effective way is c...

Class VI Lesson: Electricity and Electric Circuits: Multiple choice questions

October 22, 2012

For Questions from 1 to 10 Visit: 6th Electricity and Circuit MCQ'S based on NCERT/CBSE 11. A complete electric circuit is called______________ electric circuit. (a) open (b) Closed (c) Complete (d) None of these 12. ----------- is an insulator. (a) Metal (b) acid (c) Rubber (d) Salt solution 13.__________is a conductor. (a) Wood (b) Metal (c) Paper (d) Petrol 14. The electric current in a closed circuit always flows from the ___________terminal of the electric cell to the ______terminal. (a) Negative to positive (b) Positive to negative (c) Positive to positive (d) None of these 15. The base of an electric cell is its ___________terminal. (a) Positive terminal (b) Negative terminal (c) Negative and positive (d) None of these 16. The path along which electric current flows is_____________. (a) Switch (b) Electric current (c) Electric circuit (d) Electric cell 1...

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