PROCEEDINGS OF THE DIRECTOR OF HIGHER SECONDARY EDUCATION, HOUSING BOARD BUILDINGS, SANTHI NAGAR, THIRUVANANTHAPURAM

Sub :- HSE - Guidelines & details of practical for the year 2015-16-reg.

No.Acd/Spc (1)/70262/2015/HSE Dated: 02/12/2015

Read: Letter No. Prog II/2191/2015/SCERT dated 31/10/2015 from the director SCERT, Thiruvananthapuram

O R D E R S

As per the reference cited the Director, SCERT Thiruvananthapuram has informed

that they have developed guidelines and other details regarding the Practicals of Higher

Secondary subjects as part of the teacher texts.

The details of guidelines for practical evaluation of the following subjects prepared by

SCERT has been approved for wider dissemination including uploading in the Higher

Secondary portal.

1. Accountancy with computerised accounting.

2. Botany

3. Chemistry

4. Communicative English

5. Electronics

6. Gandhian Studies

7. Geography

8. Home Science

9. Journalism

10. Psychology

11. Physics

12. Social Works

13. Statistics

14. Zoology

Orders are issued accordingly.

Sd/- K. N. SATHEESH I A S Director

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Practical (Total Periods - 30)

SCHEME OF PRACTICAL EXAMINATION

1. A. Dicot stem,Monocot stem,Dicot root,Monocot root

Preparations-2, Diagram -1, Labelling- (at least two main parts),Identification- , Reason-1( two features for stem/root and othertwo for dicot/monocot).

2. B.Vegetative propagules

Bulb,Offset,Rhizome,Runner,Sucker,Tuber (any five propagulesshould be provided )Name of propagule - , .which part modified- , Labelling- 1 (atleast two parts).

3. C.Microscopic slides (Oscillatoria,Rhizopus,Spirogyra,Moss-protonema,Fern-prothallus) Macroscopic specimens (Agaricus,Sargassum,Funaria-gametophyte with sporophyte,Nephrolepis-sporophyte,Pinus male cone and Female cone), Any threemicroscopic and macroscopic specimen should be provided. Nameof specimen and its specified part - any one reason for itsidentification- .

D.Photograph of Bioreactor, Bt cotton ,Cloning vector(identification-, any one reason for its identification- ).

4. E.Identification of any one stage of mitosis from the permanentslide mounting(use pointer eye piece)(Identification of given stage any one reason for its identification-).

5. F.Physiological experiments (as per syllabus)(at least fiveexperiments should be provided) Aim of experiment- ,, diagram-, labelling- .

6. G.Single flower and LS of flower (should be mounted ondissection microscope)belongs to fabaceae,solanaceae and lilliaceaeshould be provided for each batch to construct the floral formula-1.

2 Higher Secondary - Teacher Text - BOTANY

7. H. Lichen ,Cuscuta/Loranthus,Epiphyte( identification ofinteraction-1 description-1).

8. I. Anther should be provided to take C.S.

Section- , diagram-1( diagramatic sketch of four lobed anther CS/cellular diagram of a single lobe) labelling-( any two parts).

9. Ask simple questions informally related to the physiologicalexperiments done-1.

10. Practical diary-2.

* Issue individual materials for Q.no.1A and 8.I

* Give separate answer sheet for answering spot at sight ,the materialC, D, E (mitosis )and collect the answer sheet immediately afteranswering.

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3

HIGHER SECONDARY PRACTICAL EXAMINATION BOTANY

HSE-II Time: 1 HrsTotal score: 20

1. Prepare a T.S of the given specimen A and identify givingreasons. Draw the ground plan and label the parts. Leave thepreparation for valuation. Score 5

Preparation - 2Labelled diagram - 1Identification - 1Reason - 1

2. Observe the given specimen B. Score 2

(a) Name the vegetative propagule - (b) Which plant part is modified - (c) Draw a neat labelled diagram - 1

3. Identify the material C and D at sight by giving reasons.Score 2

Identification - x 2 = 1Reason - x 2 = 1

4. Identify the given stage E of mitosis and give reasons.Score 1

Identification - Reason -

5. Write the aim of the experiment F. Draw and label the parts.Score 1

Aim - Labelled diagram - 1

4 Higher Secondary - Teacher Text - BOTANY

6. Construct the floral formula of the given fower G Score 1

7. Write down the ecological interaction of the specimen HScore 2

8. Prepare a C.S. of the given specimen I . Draw diagram andlabel any two parts. Leave the preparation for valuation.

Score 2Section - Labelled diagram - 1

9. Assertaining the awareness of concepts related to theexperiment Score 1

10. Practical diary Score 2

1Teacher Text-Chemistry

Micro-chemical methods are available for several of the practicalexperiments. Wherever possible such techniques should be used.

A. Surface Chemistry (Periods 5)

(a) Preparation of one lyophilic and one lyophobic sol. Lyophilic sol :starch , egg albumin and gum. Lyophobic sol: aluminium hydroxide, ferrichydroxide, arsenioussulphide. (b) Dialysis of sol prepared in (a) above.(c) Study of the role of emulsifying agent in stabilizing the emulsions ofdifferent oils.

B. Chemical Kinetics (Periods 4)

(a) Effect of concentration and temperature on the rate of reaction betweensodium thiosulphate and hydrochloric acid . (b) Study of reaction rates ofany one of the following: (i) Reaction of iodide ion with hydrogen peroxideat room temperature using different concentrations of iodide ions. (ii)Reaction between potassium iodate (KIO3 ) and sodium sulphite (Na2SO3)using starch solution as indicator (clock reaction).

C. Thermochemistry (Periods 4)

Any one of the following experiments : (a) Enthalpy of dissolution ofcopper sulphate or potassium nitrate. (b) Enthalpy of neutralization ofstrong acid (HCl) and strong base (NaOH) (c) Determination of enthalpychange during interaction (Hydrogen bond formation) between acetoneand chloroform.

D. Electrochemistry (Periods 2)

Variation of cell potential in Zn/Zn2+//Cu2+/Cu with change inconcentration of electrolytes (CuSO4 or ZnSO4 ) at room temperature.

E. Chromatography (Periods 2)

(a) Separation of pigments from extracts of leaves and flowers by paperchromatography and determination of Rf values. (b) Separation of

CHEMISTRYPracticalsTotal Periods 60

2 Teacher Text-Chemistry

constituents present in an inorganic mixture containing two cations only(constituents having wide difference in Rf values to be provided).

F. Preparation of Inorganic Compounds (Periods 4)

(a) Preparation of double salt of ferrous ammonium sulphate or potashalum. (b) Preparation of potassium ferric oxalate.

G. Preparation of Organic Compounds (Periods 2)

Preparation of any one of the following compounds: (a) Acetanilide (b)Di-benzal acetone (c) p-Nitroacetanilide (d) Aniline yellow or 2 -Napththol aniline dye

H. Test for the Functional Groups Present in Organic Compounds (Periods 5)

Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic andamino (primary) groups.

I. Characteristic Tests of Carbohydrates, Fats and Proteins in Pure Samplesand Their Detection in Given Food Stuffs. (Period 4)

J. Determination of Concentration/Molarity of KMnO4 Solution by Titratingit against a Standard Solution of (Periods 10)

(i) Oxalic acid (ii) Ferrous ammonium sulphate (Students will berequired to prepare standard solutions by weighing themselves).

K. Qualitative Analysis (Periods 16)

Determination of one cation and one anion in a given salt.

Cations - Pb2+, Cu2+, As3+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+, Co2+, Ca2+, Sr2+, Ba2+,Mg2+, NH4+

Anions - CO32-, S2-, SO32-, SO42-, NO2-, NO3-, Cl-, Br-, I-, PO43-, C2O42,CH3COO-

(Note : Insoluble salts excluded)

Projects (Periods10) Scientific investigations involving laboratory testingand collecting information from other sources.

3Teacher Text-Chemistry

A few suggested projects Study of presence of oxalate ions in guava fruit at different stages of

ripening. Study of quantity of casein present in different samples of milk. Preparation of soybean milk and its comparison with the natural milk

with respect to curd formation, effect of temperature, etc. Study of the effect of potassium bisulphate as food preservative under

various conditions (temperature, concentration, time etc.) Study of digestion of starch by salivary amylase and effect of pH and

temperature on it. Comparative study of the rate of fermentation of following materials:

wheat flour, gram flour, potato juice, carrot juice etc. Extraction of essential oils present in Saunf (aniseed), Ajwain (carum),

Illaichi (cardamom). Study of common food adulterants in fat, oil, butter, sugar, turmeric

powder, chilli powder and pepper.Note: Any other investigatory project, which involves about 10 periodsof work, can be chosen with the approval of the teacher. In add