MANDALSIR

PRACTICALS FOR CLASS XII BIOLOGY 2016-17 Maximum Marks : 30         60 Periods A. List of Major Experiments 1. Study pollen germination on a slide. 2. Collect and study soil from at least two different sites and study them for texture, moisture content, pH and water holding capacity of soil. Correlate with the kinds of plants found in them. 3. Collect water from two different water bodies around you and study them for pH, clarity and presence of any living organisms. 4. Study the presence of suspended particulate matter in air at two widely different sites. 5. Study of plant population density by quadrate method. 6. Study of plant population frequency by quadrate method. 7. Prepare a temporary mount of onion root tip to study mitosis. 8. Study the effect of different temperatures and three different pH on the activity of salivary amylase on starch. 9. Isolate DNA from  available plant material spinach , green pea seeds...

COURSE STRUCTURE CLASS X First Term   Marks: 90(75+15)15=1X9 MCQ+2 QNS.X3 Theme: Materials   (30 Periods) MARKS -33 Periods -10 Unit I: 1.Chemical Substances - Nature and Behaviour Chemical reactions: Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction. Periods -20.Acids, bases and salts: Their definitions in terms of furnishing of H+ and OH– ions, General properties, examples and uses, concept of pH scale (Definition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris. Metals and non- metals: Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention...

•             Electricity Electricity is a controllable and convenient form of energy used widely in our daily use.  Flowing of water=current of water Flow or electric charges (electrons/ions) through a conductor produce electric current.  In a torch Cell provide the In an electric circuit, the direction of electric current is taken as opposite to the direction of the flow of electrons. •             Electric potential and potential difference   Electric charges flow through the conductor only if there is a potential difference between the two points. Electric potential difference between two points in an electric circuit carrying some current is the work done to move a unit charge from one point to the other.  Potential difference (V) between two points= work done (W) / charge Q, i.e.,    V = W/Q SI unit of ...

THE ASSIGNMENT IS ANSWERS  TO BE TYPED WITH QUESTIONS THESE WILL BE CORRECTED AND BACK IN MAIL AFTER  BUNCHING. NAME OF THE CHAPTER AND QNS NO. IS GIVEN ALONG WITH DATES OF SUBMISSION. QNS. ARE GIVEN IN THE BLOG SO QNS.NUMBERS  are from blog.DATE OF SUBMISSION TO MY email.is 22/4/16 ADITYA-HUMAN REPRODUCTION-1,2,3,4,5,6,7,8, AMAN-HUMAN REPRODUCTION9,10 AMIT-HUMAN REPRODUCTION-11 AMOGH-    HUMAN REPRODUCTION-12,13,14 ANKIT-human reproduction-15,20 AYANTIKA-human reproduction-16,17 BISWAJIT-HUMAN REPRODUCTION-18,19 DEEP PRABHA-HUMAN REPRODUCTION- 21,22 DIBYENDU- PLANT REPRODUCTION-1,2,3,4,5,6,7,8,9 DIMPLE- PLANT REPRODUCTION-10,11,12 IPSHITA PLANT REPRODUCTION—13 ISHIKA- PLANT REPRODUCTION-16,17 KANKANA mitra- PLANT REPRODUCTION-19, KANKANA ghosh roy- PLANT REPRODUCTION-20,21 MADHU- PLANT REPRODUCTION-23,24 MAINAK- PLANT REPRODUCTION- PAYAL- PLANT REPRODUCTION-25,26, PINKY- PLANT REPRODUCTION-27,28 POULOMI PLANT REPRO...