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the food particle forming food vacuole. Inside the food vacuole, complex substances are broken down into simpler ones. Then diffuse into the cytoplasm. The remaining undigested material is moved to the surface of the cell and thrown out. In Paramoecium [fig-9(b)], which is also a unicellular organism the cell has a de... |
her without sufficient rest. Those who are able to relax, who are not continually tensed up, and who live at a slower pace, seldom get ulcers. You studied about recent researches in the peptic ulcers caused by some bacteria in class IX. Proper functioning of all life processess require adequate amount of food in all li... |
istribution by A.P. Government 21 21. What happens to plant if the rate of respiration becomes more than the rate of photosynthesis?(AS2) 22. Why do you think that carbohydrates are not digested in the stomach?(AS2) 23. What process you follow in your laboratory to study presence of starch in leaves?(AS3) 24. How would... |
tal set up to test the presence of Carbon dioxide in exhaled air). Arrange apparatus as shown in figure and try to do the experiment once again to find out what happens. lime water water • What does this experiment indicate? • Which gas turns lime water milky? • Which gas do you think might be present in greater quanti... |
apter ‘Respiration in Organisms’. Transportation of gases We know that air is a mixture of gases, that fills the lungs and the alveoli when that enters our body. The relative amount of different gases in air and their combining capacity with haemoglobin and other substances in blood determine their transport via blood ... |
ng energy when they are short of oxygen, what can cells of other living organisms do? Let us find out by doing some experiments. 36 X Class Respiration - The energy releasing system Lab Activity Some experiments with yeast To test this idea we can see whether it is possible to detect any rise in temperature and the pro... |
g much larger air spaces which connect the stems with the roots, making diffusion from the upper parts much more efficient. fig-16: Aerial roots The most usual adaptation is to have a hollow stem. Next time when you are by a pond or marsh cut the stems of some of the plants which are growing there and see how many are ... |
(because of pollution, tobacco) and discuss with your classmates.(AS4) 21. What is the pathway taken by air in the respiratory system? Illustrate with a labelled diagram.(AS5) 22. Draw a block diagram showing events in respiration. Write what you understood about cellular respiration.(AS5) Free distribution by A.P. Go... |
nar valve in the pulmonary artery left atrio vetricular value left ventricle inferior vena cava right ventricle fig-5: Internal structure of heart Now observe the internal structure. Observe the wall of the heart. Is the thickness of the wall of the heart uniform throughout? • • How many chambers are there in the heart... |
valves are found? What do you think is the function of the valves in them? • Why do sub-cutaneous blood vessels bulge on the side away from the heart when the hand is tied? • The deep seated blood vessels (the arteries) bulge on the side towards the heart when tied. What do you understand from it? • There are valves in... |
move the fluid and the transporting medium is blood. The Arthropods have developed a pulsatile organ to pump the blood, the heart. The blood instead of flowing in blood vessels floods the tissues, directly supplying the nutrients to the tissues. Oxygen is directly supplied to the tissues directly by the respiratory sys... |
through root and stem into the leaves. Here the water evaporates and releases into the atmosphere. The evaporation creates the main pull of water above root pressure which gives a variable and minor push from below. This results in a continuous column of moving water, the ‘transpiration stream’. Is there any relation b... |
n be named as____________. g) The valve that is present between right atrium and right ventricle can be named as ___________. 14. If the valves in veins of the legs fail to stop the flow of blood what could be the consequences of this failure?(AS2) 15. What will happen if cell sap of root hair cells contain high concen... |
REPORT ON URINE ANALYSIS TEST/METHOD RESULT 24 hrs.Protein 24 hrs Creatinine 24 hrs.Calcium 24hrs.phosphorous 24hrs.uric Acid ELECTROLYTES : Sodium potassium Osmolality (calculated) Glucose Chlorides Urea 90 2.7 305 0.8 800 140 50 180 65 128 35 UNITS mg/day mg/day mg/day mg/day mg/day mmol/L mmol/L mosm/L mg/dl mmol/L ... |
d by a ring of muscles or sphincter. Urethra is 4 cm long in females and about 20cm long in males. Its opening is separate in females but is in common with the reproductive tract in males (urino-genital duct). Micturition The urine is temporarily stored in the bladder. There are two sets of circular sphincter muscles i... |
o taste. Hence, herbivores usually do not prefer to eat such plants. Some of the chemicals are toxic and may even kill the animal that eats them. Think and discuss • Why weeds and wild plants are not affected by insects and pests? Some of the plants secrete chemicals when injured. These chemicals seal the wound and hel... |
nal tubule with neatly labled diagram.(AS5) 19. Draw a block diagram showing the path way of excretory system in human being.(AS5) 20. If you want to explain the process of filtration in kidney what diagram you need to draw.(AS5) 21. List out the things that makes you amazing in excretory system of human being.(AS6) 22... |
little known till late 18th century. Then, physiologists began to study the mechanism of nerve functioning and found how signals were transmitted by making the connection between recent work on electricity and the propositions on working of the nervous system made till then. Now we know more about how nerves from diffe... |
initiated by cerebrum. Midbrain Cerebellum Medulla oblongata i) Contains centre for cardiac, respiratory and vasomotor activities. (Vasomotor refers to actions upon a blood vessel which alter its diameter) ii) Coordinates reflexes like swallowing, coughing, sneezing and vomiting. Do you know ? The brain weighs approxim... |
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