Science 2
- Explain the importance of fruit processing in human life? Fruits are called perishable products which means that they cannot be stored for long durations. Hence for storage and usage for a long term... 1
- Why some of the organs in human body are most valuable? We know that the human body is a system which is comprised of various types of organs. The health of body can be in best if all the vital or... 1
- Which precautions will you take during spraying of pesticides? Pesticides are chemicals which are used on plants for protecting them against pest infection. They contain toxic chemicals which are harmful... 1
- Which products produced through biotechnology do you use in your daily life? There are various products which we use in our daily life that are produced by biotechnological processes. We are making curd and buttermilk... 1
- Write short notes on b. Importance of medicinal plants. Medicines made from harmful chemicals have side effects and are not safe to be used unless there is medical supervision. Therefore, world-wi... 1
- Write short notes. a. Biotechnology: Professional uses. Biotechnology can be used in the many professional fields, like. crop biotechnology, animal husbandry, human health, environmental Pollution... 1
- Gene from Bacillus thuringiensis is introduced into soyabean. Rewrite the following wrong statements after corrections (ii) Gene from Bacillus thuringiensis is introduced into cotton plants. 1
- Changes in genes of the cells are brought about in non-genetic technique. Rewrite the following wrong statements after corrections. (i) Changes in genes of the cells are brought about in genetic technique. Or Non-genetic technology involves use of either cell or tissue 1
- Match the pairs. a. Interferon 1. Diabetes b. Factor 2. Dwarfness c. Somatostatin 3. Viral infection d. Interleukin 4. Cancer 5. Hemophilia a. Interferon Viral infection b. Factor Hemophilia c. Somatostatin Dwarfness d. Interleukin Cancer 1
- Fill in the blanks and complete the statements. a. Methods like artificial insemination and embryo transplant are mainly used for Animal Husbandry. b. Stem cell reaserch is the revolutiona... 1
- How does the bread become spongy? breads are produced from flour of cereals. Dough is formed by mixing of baker’s yeast – Saccharomyces cerevisiae, water, salt and other nece... 1
- Which fuels are obtained from biomass? fuels obtained from biomass is biogas and biodiesel. The biogas is obtained from dung of cattle. The fermentation of cattle dung gives rise... 1
- Which plants are cultivated to obtain the fuel? most popularly used biofuel plants are corn, sugarcane, palm oil, jatropha, soyabean, canola, cottonseed, sunflower and wheat. 1
- What are the benefits of mixing ethanol with petrol and diesel? Ethanol, an alcohol is a clean (smokeless) fuel obtained during fermentation of molasses by the yeast- Saccharomyces.it is easily available... 2
- What is role of microbes in compost production? Composting is a type of waste which is biodegradable so that it can be broken down into different substances. So here microbes carry out the... 2
- Complete the following conceptual picture related to environmental management. Oil spill Microbes Sewage Treatment , Land filling ,Inoculents , Biofuels , Biogas , oil spill 1
- Complete the following conceptual picture with respect to uses. Xanthan gum Weedisides , Toothpaste , pigments , Fertilizers , papers , Chocolates 1
- Microbial enzymes are used instead of chemical catalysts in chemical industry Microbial enzymes are used instead of chemical catalysts in chemical industry because Now a day, instead of chemical catalysts, microbial en... 1
- Enzymes obtained by microbial process are mixed with detergents. Enzymes obtained by microbial process are mixed with detergents because When detergents are mixed with microbial enzymes, they start working... 1
- Use of mutant strains has been increased in industrial microbiology. Use of mutant strains has been increased in industrial microbiology because Mutant strains are genetically improved strains which give highe... 1
- Complete the following conceptual picture. Cleaning Sewage after processing Cleaning , mopping floors , Gardening , Groundwater treatment 1
- Why is it necessary to ban the use of plastic bags? Plastic bags are a very big problem to the environment. They are mostly made of organic polymers which are nothing but long chains of carbon... 1
- Which precautions are necessary for proper decomposition of domestic waste? It is important to take precautions for decomposition of domestic waste or household waste . The containers that held pickles, jams, coffee,... 1
- How the bread and other products produced using baker’s yeast are nutritious? Different types of breads are produced from flour of cereals. Dough is formed by mixing of baker’s yeast – Saccharomyces cerevisiae, water,... 1