Question Paper class 10 CBSE SA-1 for 2015

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Obtaining and Utilization Food Class 7 Science Solved question (Basic Science Questions answers)

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A. Answer these questions 1. Name the three life process help living being to procure energy from food? Answer: Three life processes that help living organisms to procure energy from food are: (i) Digestion (Nutrition) (ii) Respiration (iii) Transportation 2. What are Autotrophs? Name an organism other than other than green plant that is an autotroph. Answer: Autotrophs are organisms that can prepare their own food. Chlamydomonas is a type of green algae which is an example of an autotroph, other than green plants. Cyanobacteria are also an example of autotroph. 3. Name three type of heterotrophic nutrition Answer: Three types of heterotrophic nutrition are: (i) Saprophytic nutrition (ii) Parasitic nutrition (iii) Holozoic nutrition 4. What are enzymes? Answer: Enzymes are chemical substances that act as biological catalysts and are important for carrying out biochemical processes, such as digestion, in our body ...
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9th Atoms and Molecules Question bank By KV For CBSE Board

CHAPTER - 3 “Atoms and Molecules” 1. Laws of Chemical Combination 2. John Dalton's Atomic Theory 3. Atoms, ions & Chemical Formula 4. Mole Concept 5. Molar Mass & Avogadro constant Download Test Paper with solution CBSE Study By Jsunil ********************************************************************************* 1 Mark Questions: 1. Who gave law of conservation of mass ? 2. What term is used to represent the mass of 1 mole molecules of a substance? 3. What name is given to the number 6.023 x 10 23 ? 4. What is molecular mass? 5. Give Latin names for sodium & mercury. 6. *How many atoms are there in exactly 12 g of carbon ? 7. Define mole. 8. Calculate formula unit mass of CaCl2. [ At. Mass : Ca = 40 u , Cl = 35.5 u ] 9. Name a diatomic gas. 10. How many atoms are present in H 2 SO 4 . ...
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Class IX assignment Chapter: Sound

9 th Chapter: sound –Guess Questions for practice 1. If you place some small blades on a drum, what will you observe when you beat this drum with a drum stick? Explain. 2. Describe an activity with a (a) metre scale (b) rubber band to show that only a vibrating body produces sound. 3. With the help of tuning fork demonstrate that sound is produced by a vibrating body. 4. What is vibrating in the following musical instruments producing by a musical sound? (a) Violin (b) drum (c) saxophone (d) flute (e) guitar (f) dholak (g) tabla (h) sitar 5. What is medium? What constitutes the medium? 6. Describe an activity to show sound travels faster through a solid medium than through a gaseous medium. 7. Describe an activity to show sound travels faster through a solid medium than through a liquid medium. 8. Describe the experiment to demonstrate that waves do not c...
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CBSE: 9th Subject: Biology assignment Chapter: Tissues

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Biology assignment Chapter: Tissues  Q1 Plant and animal tissues are different . Comments. Q2 What is the meristamatic tissue ? what are its characteristics ? Q3 Describe the occurrence of apical. Lateral and intercalary meristems . Q4 Define permanent tissue . What are different categories of permanent tissue . Q5 Give distribution ,types and function of parenchymatous tissues. Q6 How is collenchymas different from sclerchma ? Q7 Describe complex permanent tissue ? Q8 What are the different compounds of xylem and phloem ? Q9 Give on outline classification of animals tissue. Q10 Give characteristics and types of the epithelial tissue . Q11 Diagrammatically show the difference in the three types of muscle fibres . Q12 Where are fats stored in our body . Define their structure . Q13 What are the type...
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Endocrine glands in simple terms class 10 science

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let's break down the location and functions of endocrine glands in simple terms : 1. Pituitary Gland: It's like the boss of all glands. Located in your brain, it controls many other glands and growth. 2. Thyroid Gland: This is in your neck. Think of it as your body's thermostat. It regulates metabolism and energy. 3. Adrenal Glands: They sit on top of your kidneys. Imagine them as stress managers. They release hormones for stress response. 4. Pancreas: It's in your abdomen. It's like a sugar regulator, producing insulin to control blood sugar. 5. Ovaries (in females) and Testes (in males): These are responsible for reproduction and secondary sex characteristics. 6. Pineal Gland: Deep in your brain, it's like your sleep manager, producing melatonin for sleep-wake cycles. 7. Hypothalamus: Also in the brain, it talks to the pituitary gland and helps control hunger, thirst, and body temperature. Remember, these glands release hormones that act as messen...
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