For full notes and video lectures of Nutrition in Plants, students can enroll for ICSE Biology Sample Paper for Class 7 on the Extramarks app. By learning the ICSE Biology Sample Paper for Class 7, students will know that the nutritional requirements of most animals compared with simple plant requirements are fairly broad and complex. The animals use carbohydrates, lipids, nucleic acids, proteins, minerals, and vitamins as nutrients. Carbohydrates are the essential energy source for all animals. Approximately half to two-thirds of the total calories each animal absorbs every day are from carbohydrates. Glucose is the most often used carbohydrate as an energy source. During cellular respiration, this monosaccharide is metabolized, and part of the energy is used to synthesize adenosine triphosphate. Certain essential carbohydrates include maltose, lactose, sucrose, and starch. Lipids are used to form membranes of the cells and organelles, sheaths surrounding the nerve fibers, and certain hormones. One lipid type, fats, is a beneficial source of energy. Nucleic acids are used for deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and ATP production. Animals derive their nucleic acids from plant and animal tissues, particularly from nucleic-containing cells.
ICSE Biology Sample Paper for Class 7 has one more important chapter- Water: A Precious Resource. When you take a picture of the Earth from outer space, it appears blue in the form of sea and ocean due to the presence of water. About 71 percent of the Earth's surface is water. Of the overall water on Earth, 97.4% is in the seas and oceans, but it is not suitable for human use. In a usable form, freshwater is present in just a small fraction of all Earth's water. Most people believe there is plenty of water throughout the world. Yet in fact, all this water isn't suitable for human use, not even suitable for plants and other life forms. There are various forms of Water. For video lectures of Water: A Precious Resource students can enroll for ICSE Class 7 Biology Question Paper membership on the Extramarks app.
https://www.extramarks.com/sample-paper-icse-for-class-7-biology