Class name Subject Book title Chapter number Content Created at
Class X Science Science 4 attached to carbon chains of different lengths. ■ The functional groups such as alcohols, aldehydes, ketones and carboxylic acids bestow characteri...
Class X Science Science 4 water is treated with soap. 11. What change will you observe if you test soap with litmus paper (red and blue)? 12. What is hydrogenation? What is ...
Class X Science Science 5 CHAPTER 5 Life Processes ow do we tell the difference between what is alive and what is not H alive? If we see a dog running, or a cow chewing cud,...
Class X Science Science 5 alive. So living creatures must keep repairing and maintaining their structures. Since all these structures are made up of molecules, they must mov...
Class X Science Science 5 most common chemical means to break-down molecules. For this, many organisms use oxygen sourced from outside the body. The process of acquiring oxy...
Class X Science Science 5 means that the transportation system will need to transport waste away from cells to this excretory tissue. Let us consider these various processes...
Class X Science Science 5 which is converted into carbohydrates in the presence of sunlight and chlorophyll. Carbohydrates are utilised for providing energy to the plant. We...
Class X Science Science 5 sunlight for about six hours. ■ Pluck a leaf from the plant. Mark the green areas in it and trace them on a sheet of paper. ■ Dip the leaf in boili...
Class X Science Science 5 the same size. ■ Keep them in a dark room for three days. ■ Now place each plant on separate glass plates. Place a watch-glass containing potassium...
Class X Science Science 5 the food source is stationary (such as grass) or mobile (such as a deer), would allow for differences in how the food is accessed and what is the n...
Class X Science Science 5 alimentary canal is basically a long tube extending from the mouth to the anus. In Fig. 5.6, we can see that the tube has different parts. Various ...
Class X Science Science 5 move the food in aregulatedmanneralongthedigestive tube so that it can be processed properly in each part. The lining of canal has muscles that con...
Class X Science Science 5 the secretions of the liver and pancreas for this purpose. The food coming from the stomach is acidic and has to be made alkaline for the pancreati...
Class X Science Science 5 teeth after eating removes the plaque before the bacteria r o produce acids. If untreated, microorganisms may invade the pulp, causing M inflammati...
Class X Science Science 5 food material taken in during the process of nutrition is used in cells to provide energy for various life processes. Diverse organisms do this in ...
Class X Science Science 5 energy released during the process of respiration is used to make an ATP molecule from ADP and inorganic w phosphate. n K t Endothermic processes i...
Class X Science Science 5 and the gill-slits (or the operculum which covers the gill-slits) behind their eyes also open and close. Are the timings of the opening and closing...
Class X Science Science 5 mucus which helps in this process. From here, the air passes the form of gutkha. Stay through the throat and into the lungs. Rings of cartilage are...
Class X Science Science 5 alone cannot take care of oxygen delivery to all parts of the body. harmful chemicals enter Instead, respiratory pigments take up oxygen from the a...
Class X Science Science 5 and adults? ■ women?re any difference in the haemoglobin levels for men and ■ Visit a veterinary clinic in your locality. Find out what is the norm...
Class X Science Science 5 the heart on the left, the left atrium. The left atrium relaxes viewofthehumanheart when it is collecting this blood. It then contracts, while the ...
Class X Science Science 5 in other vertebrates. This is known as double circulation. 92 Science Reprint 2026-27 Blood pressure The force that blood exerts against the wall o...
Class X Science Science 5 start bleeding. Naturally the loss of blood from the system has to be minimised. In addition, leakage would lead to a loss of pressure which would ...
Class X Science Science 5 and plant bodies have a large proportion of dead cells in many tissues. As a result, plants have low energy needs, and can use relatively slow tran...
Class X Science Science 5 and the other with the stick, with plastic sheets and place in bright sunlight for half an hour. ■ Do you observe any difference in the two cases? ...