CBSE ADDA

CBSE TEST PAPER-01  SCIENCE & TECHNOLOGY  (Class-10) Chapter 6 : Life Process 1 . What are the raw materials for photosynthesis? (1 mark) Answer: The raw materials and other necessary items required for photosynthesis are Sunlight, Water, CO 2 and Chlorophyll. 2. What is the role of bile juice in digestion? (1 mark) Answer: Bile is alkaline in nature and it is temporarily stored in gallbladder  and helps in digestion of fats,   it also helps in absorption fats. 3. Write the equation for respiration? (1 mark) Answer: C 6 H 12 O 6   --- > C 3 H4O 3   ----->   6CO2 +  6H2O +  38ATP 4. Name three types of blood vessels used in the transport of blood. (1 mark) Answer: Arteries, vein and capillaries Note: There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the

Life processes – The processes that are necessary for an organism to stay alive. Eg. Nutrition, respiration, etc. Criteria of life - (i) Growth  (ii) Movement Nutrition - The process of taking  in food and its utilizes it to get energy, for growth, repair and maintenance, etc. and excretes the waste materials from the body is called Nutrition. Types of nutrition 1. Autotrophic nutrition (Auto =self:  trophos = nourishment) E.g. Plants, Algae, blue green bacteria. Process – Photosynthesis (Photo=light; Synthesis= to combine) Raw materials- (i) Carbon dioxide (ii)Water Chlorophyll Formula :  C55H72O5N4Mg Equation-     6CO 2   +  6H 2 O              sunlight /     Chlorophyl   ----->      C 6 H 12 O 6      +     6O 2 Energy conversion- Light/Solar energy to Chemical energ Role off Chlorophyll- To trap the sun’s energy for photosynthesis Factors- (i) Carbon dioxide (ii) Water(iii) Light (iv) Temperature Events/ Steps of photosynthesis-   (i) Absorption of light energy by chlorophyll

10th biology fifty 50 solved questions  CBSE NCERT chapter Life Process 1.Name the product and by product of photosynthesis. 2.In which biochemical form the photosynthate moves in phloem tissue? 3.What are the raw materials of photosynthesis? 4.What is the similarity between chlorophyll and hemoglobin? 5.Name the products of photolysis of water. 6.What are the end products of light dependant reaction? 7.Which cell organelle is the site of photosynthesis? 8.What is the difference between digestion of heterotrophs and saprotrophs? 9.Give example of two plants and two animal parasites. 10.Name the enzyme present in saliva, what is its role in digestion? 11.Which chemical is used to test for starch? Which colour shows the presence of starch? 12.Give the term- rhythmic contraction of alimentary canal muscle to propel food. 13.Name the three secretions of gastric glands. 14.What is the function of mucus in gastric gland? 15.Name the sphincter which regulates the exit of food from the stomac