DNA ISOLATION

SUPPORT MATERIAL FOR CLASS XII

https://drive.google.com/drive/mobile/folders/0B4UnCtEoeh_dTGstV2pObW5FT1E

SCIENCE

EXERCISE ANSWERS

SUPER MOON AT SARNI

CLASS VIII

• STARS AND THE SOLAR SYSTEM
• SOME NATURAL PHENOMENA

CLASS VI

SCIENCE EXHIBITION

• CHANGES AROUND US
• SEPARATION OF SUBSTANCES
•  BODY MOVEMENTS
• THE LIVING ORGANISMS
• ELECTRICITY AND CIRCUITS

FORMATIVE ASSESSMENT-4

CLASS VI
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CLASS VIII
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LIVE DEMONSTRATIONS OF SIMPLE SCIENCE EXPERIMENTS

Notes class VIII Force and Pressure

FORCE AND PRESSURE

         Date: 22.06.2016   C.W

1.      Force is a push or pull on an object.

2.      Forces applied on an object in the same direction add to one another.

3.       If the two forces act in the opposite directions on an object, the net force acting on it is the difference between the two forces.

4.      A force can change the state of Motion.

5.      The state of motion of an object is described by its speed and the direction of motion. The state of rest or a state of motion.

6.      Force can change the shape of an object.

7.      A force

_ may make an object move from rest.

_ may change the speed of an object if it is moving.

_ may change the direction of motion of an object.

_ may bring about a change in the shape of an object.

_ may cause some or all of these effects.

8.      Types of Force

(a)    Contact Force – Muscular force and friction

Non Contact Force – Magnetic, Electrostatic and Gravitational

Emerging careers after 12th in india

http://www.publishyourarticles.net/eng/articles2/top-50-emerging-career-opportunities-for-12th-pass-out-indian-students/1811/

Foreign PMT

http://www.fpmt.in/

SUMMER HOLIDAY HOME WORK

CLASS VIII 

The students of class VIII-A are instructed to Download this Word file and complete the given activities in a new notebook (30 Pages).

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Spot a spider

New courses

New courses other than medical and engineering.

SAMPLE QUESTION PAPER SCIENCE 2014-15

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CAREER OPTIONS AFTER CLASS XII FOR SCIENCE STUDENTS

 



JOIN INDIAN ARMY LINK
IISER, ADMISSIONS LINK

B.ARCHITECTURE COURSESLINK

SCIENCE DAY CELEBRATIONS

OTBA 6 TO 8 SCIENCE

Study material for class XI Biology and other Subjects

https://drive.google.com/file/d/0B8JX9SS-0ql0Mkp4d1BNRElqRzQ/view

INVESTIGATORY PROJECTS FOR CLASS XI AND XII BIOLOGY

INVESTIGATORY PROJECTS IN BIOLOGY

FOR CLASSES XI AND XII

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NASA For Students 5-8

For Students 5-8

Current Opportunities for Students -- Competitions IN NASA

NASA

Current Opportunities for Students -- Competitions

KVS STUDY MATERIALS

CLASS XII

KVS STUDY MATERIAL

BIOLOGY

CLASS XI

KVS STUDY MATERIAL

BIOLOGY

CLASS IX

KVS STUDY MATERIAL

SCIENCE

CLASS X

KVS STUDY MATERIAL

SCIENCE

Chemical control and coordination

CHEMICAL CONTROL AND CO-ORDINATION NOTES DOWNLOAD

LINKS FOR ENTRANCE EXAMINATIONS

ALL INDIA PRE-VETERINARY TEST (AIPVT)

LINK-    WEBSITE.

                INFORMATION

Admission Notice: MBBS Course (2016-17) MGIMS WARDHA

LINK:  INFORMATION

             NOTICE PROCEDURE AND PMT CHALLAN

All India Institute Of Medical Sciences

General Links

• Home             Notification             Advertisement     Prospectus    User Manual

• ALL INDIA PRE-MEDICAL / PRE-DENTAL ENTRANCE TEST

• AIPMT

FLOWERING PLANTS WITH NAMES FOR YOUR GARDEN

Neural Control and Coordination

Neural Control and Coordination

Action potential: A sudden change in the electrical charges in the plasma membrane of a nerve fibre.

Aqueous humour : The thin watery fluid that occupy space between lens and cornea in eye.

Blind spot: A spot on retina which is free from rods and cones and lack the ability for vision.

Cerebrospinal fluid: An alkaline fluid present in between inner two layers of meninges.

Cerebellum: A part of hind brain that controls the balance and posture of the body.

Cochlea: A spirally coiled part of internal ear which is responsible for hearing.

Corpus callosum: A curved thick bundle of nerve fibres that joins two cerebral hemisphere.

Depolarisation: A condition when polarity of the plasma membrane of nerve fibre is reversed.

Endolymph: The fluid filled within membranous labyrinth.

Eustachian tube: A tube which connects ear cavity with the pharynx.

Fovea: An area of highest vision on the retina which contain only cones.

Meninges: Three sheets of covering of connective tissue wrapping the brain.

Grey Matter: This shows many convolutions which increase the amount of vital nerve tissue.

Medulla oblongata: Posterior most part of the brain which is continuous with spinal cord and

control respiration, heart rate, swallowing, vomiting.

Pons: Thick bundles of fibres on the ventral side of brain below cerebellum.

Foramen magnum: A big aperture in the skull posteriorly through which spinal cord emerges out.

Spinal cord: A tubular structure connected with medulla oblongata of brain and situated in the

neural canal of the vertebral column, covered by meninges.

Synaptic cleft: A narrow fluid filled space which separates two membranes of the two neurons at

the synapse.

Synaptic vesicles: These are membrane bound vesicles in the axoplasm of the axon terminal and

these store neurotransmitter.

Neurotransmitter: These are chemicals stored in synaptic vesicles, diffuse to reach the membrane

of next neuron for its stimulation.

Synapse: A physiological junction between axon of one neuron and dendrite of next neuron.

CNS − Central neural system

PNS − Peripheral neural system

ANS − Autonomic neural system

Functions of parts of brain:

Cerebrum: Centre of intelligence, memory and imagination, reasoning, judgement, expression

of will power.

Thalamus: Acts as relay centre to receive and transmit general sensation of pain, touch and

temperature.

Hypothalamus: Centre for regulation of body temperature, urge for eating and drinking.

Mid brain: Responsible to coordinate visual reflexes and auditory reflexes.

Cerebellum: Maintains posture and equilibrium of the body as well as coordinates and regulates

voluntary movement.

Pons varoli: Relays impulses between medulla oblongata and cerebral hemisphere and between the

hemisphere of cerebrum and cerebellum.

Medulla oblongata: Centre that control heart beat, breathing, swallowing, salivation, sneezing,

 vomiting and coughing.

Reflex Action: as a spontaneous, automatic and mechanical response to a stimulus

acting on a specific receptor without the will of an animal.

Eg.- movement of diaphragm during respiration, blinking of eyes, coughing, yawning,

 sneezing etc.

Reflex arc – The path travelled by an impulse in a reflex action is called a reflex arc.

It comprises - i) A specific receptor, ii) an afferent nerve iii) a portion of central

nervous system,  iv) an efferent nerve, v) an effector.

ANIMATION FOR TRANSMISSION OF NERVE IMPUSE

STEP 1

Nerve cell is at resting potential with diffusion of Na+ & K+ down concentration gradient as cell pumps up the gradient

STEP 2

neurons recieve stimulation causing local potentials which may lead to reach threshold

STEP 3

sodium channels in trigger zone of axon opens

STEP 4

sodium ions diffuse inward, depolarizing the membrane

STEP 5

potassium channels in the membrane open

STEP 6

potassium ions diffuse outward, repolarizing the membrane

STEP 7

action potential causes electric current that stimulates adjacent portions of the membrane

STEP 8

action potentials occurs sequentially along the length of axon as nerve impulse

FA4 CLASS-X

CLASS X FORMATIVE ASSESSMENT-4

MANAGEMENT OF NATURAL RESOURCES

DATE: ..................

1. Identify the following items as biodegradable and non biodegradable.                                     Rubber, metals, plastic,earthen pot.
2.  The green plants in terrestrial ecosystem capture about …. Percent of energy of sunlight. (1/10/100)
3. What is the percentage of the amount of organism matter that is present at each step of the trophic level. (1/10/100)
4. Complete the food chain. Grass---àGrass hopper---à…….--àsnake--à……
   (deer and lion/frog and vulture).
5. A complex food chain forms a ………… (foodweb/foodnet/foodchains)
6. Flow of energy in an ecosystem is from Producers to ……. (tertiary consumers/Herbivores)
7. How many Oxygen atoms are there in an Ozone molecule. (2/3/4/5)
8. Ozone is deadly………….. (poison/useful/useless)
9. Ozone shields the surface of earth from harmful…….. rays. (UV/IR/VS)
10. How is ozone layer formed in atmosphere?
11.  Expand (a) CFC (b) UNEP
12. Change in attitude also have role to play in managing the garbage waste. Discuss some methods to manage garbage in factory estate.
13. Why plastic glasses were changed to kulhads.
14. Name any two Biotic and abiotic components of pond ecosystem.

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LINK FOR NCERT CLASS IX AND X PRACTICALS

LINK FOR CBSE CLASS IX PRACTICAL SKILLS SAMPLE PAPER

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LINK FOR CBSE CLASS X PRACTICAL SKILLS SAMPLE PAPER

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CLASS IX FORMATIVE ASSESSMENT-4

MANAGEMENT OF NATURAL RESOURCES

DATE: 21.01.2016

• 
  1. ROLL NOS 1-20 WILL DRAW NITROGEN CYCLE AND21 TO 39 WILL DRAW CARBON CYCLE.(2)
• 2.       Hot Air always rises (a) Up (b) down (c) Left (d) right (1)
• 3.       Water cools down …………… than the land at night. (slower/faster). (1)
• 4.       The fossil fuels contain small amount of …………. And …………
• (Hydrogen and helium/sulphur and nitrogen/magnesium and strontium) (1)
• 5.       ……….. is commonly found on the barks of trees as a thin greenishWhite  crust. (Micorrhizae/bacteria/Lichen) (1)
• 6.       The factors that make soil are Sun , water, …… and ……….(wind and living organism/force and momentum/radiation and lightening) (1)
• 7.       O₂=Oxygen molecule  O₃= ……………… (oleium/Ozone/opossum) (1)
• 8.       Ozone layer has a hole in earths atmosphere. Name the continent  (Asia/Europe/Antarctica/South America) (1)

CBSE 2016Sample question paper class XII

SAMPLE PAPERS FOR CBSE 2016 EXAMINATION
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CBSE 2016 Class X Sample papers

SAMPLE PAPERS FOR ALL SUBJECTS CBSE 2016 FOR SA-II

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