Biology Question

1. Plant cells are more rigid than animal cells. 2. Cells are the basic structural unit of living organisms.  3. Tomatoes are red in colour.  4. More mitochondria is present in cells engaged in more physiological activities.  5. Nucleus is control centre of cell.  6. Mitochondria is powerhouse of the cell. 7. Plastids are found only in plant cells. 8. Plant cells have big vacoules. 9. Shape of the cells differ in multicellular organisms. 10. The cells remained undiscovered for a long time. 

1. To make a colourful collage of forest products. 2.  To plant trees on ocassion of Vanmahotsav.  3. To make a food chain with the help of paper, beads, strings etc.  4. Collect various types of Seeds of plants.  5. Observe seed germination in gram seed.  6. Make a food pyramid.  7. Show bread mould on bread and discuss how it is formed and how can it be prevented.  8. Prepare a chart of vitamins, deficiency diseases and their symptoms.  9. Make a model of respiratory system.  10. Use clay to make a model of eye.  11. Collect pics of different food items and classify them as proteins, carbohydrates and fats and prepare a wall magazine. 

1. Which of the following is a multicellular organism? a) Euglena           b) amoeba  c) earthworm.    d)  Paramoecium 2. Name the cell organelle that is responsible for forming skeletal framework of animal cell.  a) chromatin network  b) Golgi complex c) Endoplasmic Reticulum  d) Vacuole  3. We use stain to prepare temporary mount of cheek cell and onion peel. Which of the two stains are used to stain them respectively?  a) saffranine and glycerine b) saffranine and iodine c) methylene blue and saffranine  d) saffranine and methylene blue 4. Robert Hooke observed honey comb like structure in a) an onion peel b) a thin slice of potato c) a thin slice of cork d) a leaf 5. The number of chromosomes present in humans is a) 44    b)22     c) 46     d) 23 6. Which of the following organelle helps in protein synthesis?  a) vacoules.         b) ribosome c) chromatin.      d) lysosomes  7. Euglena and Paramecium have special structures for its locomotion and collection of food. Which of the f

1. Both humans and cattle can be infected by tuberculosis. 2. Vacuum packing strips bacteria of oxygen. 3. Chorella and Euglena are examples of protozoans.  4. Malaria is spread by female Aedes mosquito.  5. Tetanus can be prevented by vaccination.  6. Salt reduce the amount of water content in food and helps in preservation.  7. Mumps is a bacterial disease. 8. Vaccines produce immunity by producing antigens.  9. Vinegar is commonly known as citric acid.  10. Microorganisms exhibit maximum growth in the temperature range of 20 to 35 degrees. 

1. ___________ are the oldest forms of life on earth. 2. The scalp contains ____________ bacteria per cm square. 3. ______________ sugar is present in milk. 4. The harmful substances released in our body by microorganisms are called ____________. 5. Canine distemper is a __________ disease which infects dogs. 6. Proper disposal of waste and using disinfected water can prevent us from ____________. 7. Jams and jellies are usually preserved by _________. 8. Fungi _______________ causes food poisoning. 9. _______________ disease caused complete destruction of the potato crop during Irish Famine. 10. Microorganisms produce __________ in bio gas reactors. 

1. Push and pulling sorting activity. Take examples from everyday activities done at home and ask students to sort it out. For example : using a remote control, closing door of a refrigerator, opening a drawer, fixing a nail, tieing shoe lace etc. 2. Make a mini catapult using popsicle sticks and a spoon.  3. Make a movable pulley using things easily available at home. 4. Build different car ramps with different slopes and write your observations.  5. Design an activity to show liquid exerts pressure on the walls of the container. 6. Use clay to make different shapes and then observe effect of your one finger, two fingers, three fingers etc. on the shape and then write your conclusions. 

1. What are pathogens? 2. How are cavities formed in teeth? 3. Name two diseases that spread through air. 4. How does disease spread through air? 5. Name two diseases that spread through contaminated food.  6. Some diseases spread which spread when bitten by an animal. Name two such diseases. 7. Name two fungal disease.  8. Name four diseases that can be prevented by vaccination.  9. Using mosquito net is one of the best ways to prevent the diseases that spread through mosquito bite. Name two such diseases and the mosquitoes that act as vectors.  10. Good personal hygiene is a good method to prevent diseases. Name two disease that can be prevented if we follow good hygiene. 

On February 12th 2020,I received a WhatsApp message from one of my friends living in Vietnam that all the schools in her country had adopted online teaching as the schools were closed there due to Corona outbreak. One line that took my attention was 'a period of adjustment for students and teachers but they are all handling it pretty well' . The same day I discussed this in my Master Trainers' group and got a very positive response from our mentor, Mrs. Rajinder Narula. This encouraged me further to enquire and learn about the virtual classrooms. I had a talk with the computer teachers of my school and my old students who had done engineering in Computer Applications, my school friends and searched many YouTube videos. After having enough knowledge of it, I started its experimentation on my niece after her annual examinations were over. I was in the initial phases of my experiments when sudden lock down threw every human activity out of gear, be it school, any trade, unorg