Science 2
- Which are the reasons for endangering the many species of plants and animals? How can we save those? Many species are endangered mainly because of human activities that destroy their habitats or kill them; they can be saved by protecting hab... 1
- Write the names of biodiversity hot spots Biodiversity hotspots in India: (1) Himalaya, (2) Indo-Burma, (3) Western Ghats and Sri Lanka, (4) Sundaland (which includes the Nicobar Isl... 1
- What do we learn from the story of Jadav Molai Peyang? The story of Jadav Molai Payeng teaches us that even one determined person can create a whole forest and make a big difference to the enviro... 1
- How the biodiversity can be conserved? Biodiversity can be conserved by protecting organisms in their natural habitats (in-situ conservation), by protecting them outside their hab... 1
- Write the types and examples of biodiversity Biodiversity is of three types: genetic diversity, species diversity and ecosystem diversity. Genetic diversity: variation in genes among in... 1
- Why does the human beings have important place in environment? Human beings have an important place in the environment because they affect it more than any other organism, and only they can consciously p... 1
- Write the factors affecting environment. The environment is affected by natural factors and by human (man-made) factors. Natural factors: Earthquakes, volcanic eruptions, floods, dr... 1
- Which projects will you run in relation to environmental conservation? How? Projects for environmental conservation that a student can run, with how to run them: Tree plantation and care: plant native trees in the sc... 1
- How will you justify that overcoming the pollution is a powerful way of environmental management? Controlling pollution is a powerful way of environmental management because pollution is the main cause of damage to air, water, soil and li... 1
- Write short note on e. Disaster and its management A disaster is a sudden event that causes great loss of life, property and the environment; disaster management is the planning and action ta... 1
- Write short note on d. Sacred Groves. Sacred groves are patches of forest that are protected by local people because they are dedicated to a local deity or have religious importa... 1
- write short note on c. Biodiversity. Biodiversity is the variety of living organisms (plants, animals and micro-organisms) found in a particular area, along with the variety of... 1
- short note on b. Chipko Movement of Bishnoi The Chipko movement was a non-violent movement in which people hugged trees to stop them from being cut. Its inspiration was the sacrifice o... 1
- Write short notes. a. Environmental Conservation Environmental conservation means protecting the natural environment, its resources and its living organisms, and using them wisely so that t... 1
- Explain the statement- ‘we have got this Earth planet on lease from our future generations and not as an ancestral property from our ancestors.’ The statement means that the Earth does not belong only to us to use as we like; we must use it carefully and hand it over in good condition... 1
- Reorganize the following food chain. Describe the ecosystem to which it belongs. Grasshopper – Snake – Paddy field – Eagle – Frog Correct food chain: Paddy field (paddy plants) → Grasshopper → Frog → Snake → Eagle. It belongs to an agricultural (farmland) ecosystem, a m... 1
- How energy is formed from oxidation of carbohydrates, fats and proteins? Correct the diagram given below.
- Explain the Krebs cycle with reaction. The Krebs cycle (citric acid cycle) is the series of reactions in the mitochondria by which the acetyl group from pyruvic acid is completely... 1
- How all the life processes contribute to the growth and development of the body? All life processes work together to supply the materials and energy that cells need to divide and grow, so the body grows and develops. Nutr... 1
- With the help of suitable diagrams, explain the five stages of prophase-I of meiosis. Most of the events that function to differentiate meiosis from mitosis occur in Prophase I Homologous chromosomes form bivalents (or tetrads... 1
- With the help of suitable diagrams, explain the mitosis in detail. Mitosis is the cell division in somatic cells in which one cell divides into two daughter cells, each with the same number of chromosomes as... 1
- Explain the glycolysis in detail. Glycolysis is the breakdown of one molecule of glucose (6-carbon) into two molecules of pyruvic acid (3-carbon) in the cytoplasm, without th... 1
- Krebs cycle is also known as citric acid cycle. The Krebs cycle is called the citric acid cycle because citric acid is the first product formed in this cycle. In the mitochondria, acetyl-C... 1
- Sometimes, higher plants and animals too perform anaerobic respiration. Higher plants and animals perform anaerobic respiration when the supply of oxygen to some of their cells is not enough. Animals: during heav... 1