answer key of mock test Science

		398CI7G
		Marking Scheme SUMMATIVE ASSESSMENT – I (2014-15) Science (Class–IX) General Instructions: 1.         The Marking Scheme provides general guidelines to reduce subjectivity and maintain uniformity. The answers given in the marking scheme are the best suggested answers. 2.         Marking be done as per the instructions provided in the marking scheme. (It should not be done according to one’s own interpretation or any other consideration). 3.         Alternative methods be accepted. Proportional marks be awarded. 4.         If a question is attempted twice and the candidate has not crossed any answer, only first attempt be evaluated and ‘EXTRA’ be written with the second attempt. 5.         In case where no answers are given or answers are found wrong in this Marking Scheme, correct answers may be found and used for valuation purpose.
		SECTION-A
	1	Columnar epithelial tissue.	1
	2	Distance	1
	3	Weight of the stone 5 20 N Mass of the stone 5 2 kg	1
	4	(a)        The solvent will evaporate and a residue will be left behind. (b)        (i)         Because it does not have a uniform composition throughout             (ii)        No new compound is formed in a mixture	2
	5	Striated squamous epithelium – arranged in many layers to prevent wear and tear. Squamous epithelium – extremely thin, flat, single layered.	2
	6	According to Newton’s law of Inertia of motion the body remains in motion after applying the brakes. Safety belt helps to keep the grip and body do not get enough jerk and get saved from getting smashed against the windscreen of the car.	2
	7	Property of solid, liquid and gas	3
	8	Explanation of reason : Large latent heat of vaporization of water helps to cool the area.	3
	9	It is the amount of solute present in given amount (mass or volume) of solution or mass or volume of solvent. Ways of expressing concentration : (a)          Mass by Mass percentage 5 (b)          Mass by volume percentage 5	3
	10		3
	11	Refer fig. 6.7, page 73, NCERT Structure-made up of four types of elements : Sieve tubes-tubular cells with perforated walls Phloem parenchyma Phloem fibres-are dead Companion cells Function – transports food from leaves to other parts	3
	12	(a)        0 to 10 sec (b)        Displacement = 125 m, average velocity = 4.17 m/s	3
	13	Yes, value of g50 at centre of earth. G has the same value at the centre of the earth as every where else as it is a universal constant. Weight of object at the centre of the earth is 0.	3
	14	The reason is that the acceleration is inversely proportional to the mass of the body.  The mass of stone being very small as compared to the mass of the  earth the acceleration produced in the stone is large. But the mass of  the earth being very large the acceleration produced in the earth is so small that the earth does not move towards the stone.	3
	15	Meaning of uniform velocity, eg Meaning of variable velocity, eg	3
	16	Acceleration = (v-u)/t M = F/a	3
	17	Expected Answer / Value Points of Test item – 39 (i)         Air, water and soil (ii)        Reproduction, growth, susceptibility to diseases (iii)       Family bonding, applying knowledge	3
	18	One variety can grow in different climatic conditions. Explain	3
	19	(a)        (i)         gas                   (ii)        solid (b)        (i)         258 C              (ii)        278 C              (iii)       78 C	5
	20	Elements                         Cannot be broken down             to simpler substances.             Compounds             Have fixed composition.             Can be broken down into             elements by chemical             reactions. Elements - Iodine, Carbon, 24 Carat gold Compounds - Sodium chloride, water, oxygen gas	5
	21	(a)        (i)         in such habitat, protection against water loss is essential             (ii)        protection against water loss, mechanical injury (b)        Cells are elongated, flattened             Closely packed. No intercellular spaces and form a continuous layer	5
	22	(a)          2gh5v22u2                 23103h5022(20)2                 h520m                 Displacement 50                 Total distance 52320540 m (b)          G5 constant value, G56.7310211 Nm2kg22                         g 5 changes from place to place, g on earth59.8 ms22	5
	23	(a)        A (b)        B (c)        A (d)       B (e)        B	5
	24	Criteria of crop selection are             (i)         different nutrient requirement.             (ii)        availability of moisture and irrigation facility                         Advantages of intercropping                         Advantages of crop rotation	5
		/SECTION - B
	25	(c)        Iodine solution	1
	26	(c)        Potato	1
	27	(c)	1
	28	(d)	1
	29	(a)	1
	30	(c)	1
	31	(c)	1
	32	(a)        sugar	1
	33	(a)	1
	34	Thin paste of starch is added to hot water with constant stirring.	2
	35	Melting point of ice 00C           273K Boiling point of water 1000C   373 K	2
	36	Mass of dry raisins (w1)         = 3g Mass of soaked raisins (w2)   = 4.8g Mass of water absorbed = 4.8-3 = 1.8g x100 % of water absorbed = w2-w1                                           w1 x100                                     = 1.8                                       3                                    = 60%	2

answer key of mock test 1st term 2015-16

SA 1 SST MOCK TEST ANSWER KEY

SA-1 HINDI MOCK EXAM ANSWER KEY

notebook work on tissues

Answer the following question

Short answers 1 marks

1. What are tissues?
2. Differentiate between animal and plant tissue
3. What are merisetmatic tissue?
4. What are permanent tissues?

Long answers

1. Draw chart of different type of plant tissues
2. Explain different type of merisetmatic tissue based on there location.
3. Write functions of merisetamatic tissues.

Short answers.

1. Name different type of simple permanent tissue.
2. Draw a chart to show different type of permanent tissues.

2 marks

3. What are chlorenchyma and aerenchyma cells?
4. What are parenchyma cells explain with diagram
5. What are collenchyma cells explain with diagram

3marks

6. Write function of parenchyma cells
7. Write function of collenchyma cells
8. Differentiate between parenchyma and collenchyma.
9. Explain sclerenchyma cells. With help of diagram
10. Write occurrence and function of  sclerenchyma cells
11. Write difference between collenchyma and sclerenchyma cells
12. Write difference between fibres and  sclereids
13. Write difference between merestmatic and permanent tissues.

Short answers. 1 marks

1. Name the two protective layer?
2. What is cutin and suberin?
3. Name the components of xylem
4. Name the components of phloem
5. Draw and label different elements of phloem.

Long answer

1. Differentiate xylem and phloem
2. List the characteristic of cork. How are they formed? Mention their role.

Long answers on animal tissues

1.       Describe the structure and function of different type of epithelial tissue. draw diagram of each type.

2. Draw labeled diagram of the different type of muscle tissue. Differentiate the muscles on the basis of occurrence, nature , activity , nucleus and striations.
3. Explain the structure of blood.
4. Give three functions of blood.
5. Give two functions of lymph
6. What is blood made up of? Describe the various components of blood.
7. Write the difference between the following:

      a. cartilage and bone

      b. ligament and tendon.

8. . Explain areolar tissue.
9. Write two characteristic of nerve cell.
10. Write function of nerve cell.
11. Draw labeled diagram of nerve cell.