{"id":28061,"date":"2021-07-03T11:13:04","date_gmt":"2021-07-03T05:43:04","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=28061"},"modified":"2021-07-03T11:13:04","modified_gmt":"2021-07-03T05:43:04","slug":"ncert-solutions-for-class-10-science-chapter-6","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/ncert-solutions-for-class-10-science-chapter-6\/","title":{"rendered":"NCERT Solutions for Class 10 Science Chapter 6 Life Processes"},"content":{"rendered":"

These NCERT Solutions for Class 10 Science<\/a> Chapter 6 Life Processes Questions and Answers are prepared by our highly skilled subject experts to help students while preparing for their exams.<\/p>\n

Life Processes NCERT Solutions for Class 10 Science Chapter 6<\/h2>\n

Class 10 Science Chapter 6 Life Processes InText Questions and Answers<\/h3>\n

In-text Questions (Page 95)<\/span><\/p>\n

Question 1.
\nWhy is diffusion insufficient to meet the oxygen requirement of multicellular organisms like humans?
\nAnswer:
\nIn multicellular organisms like man, hydra, spirogyra, the transport of oxygen and nutrients takes place by the process of diffusion but in chain smokers, walls between alveoli of lungs gets ruptured, resulting into abnormal alveoli having less surface for gaseous exchange. So gaseous exchange is reduced. In such cases heart pumps more blood to provide adequate oxygen. Thus, simple diffusion will not meet requirements of all the cells.<\/p>\n

Question 2.
\nWhat criteria do we use to decide whether something is alive?
\nAnswer:
\nRespiration, digestion, excretion, movement, reproduction etc. are the criteria to decide whether something is alive.<\/p>\n

Question 3.
\nWhat are outside raw materials used for by an organism?
\nAnswer:
\nThe outside sources of energy could be quite varied; since the environment is not under the control of the individual organism. The process of acquiring oxygen from outside the body, and to use it, is what we commonly call respiration.<\/p>\n

Question 4.
\nWhat processes would you consider essential for maintaining life?
\nAnswer:
\nThe following processes would be essential for maintain Life are –
\n(i) Respiration
\n(ii) Nutrition
\n(iii) Diggestion
\n(iv) Excretion
\n(v) Transportation<\/p>\n

In-text Questions (Page 101)<\/span><\/p>\n

Question 1.
\nWhat are the differences between autotrophic nutrition and heterotrophic nutrition ?
\nAnswer:<\/p>\n\n\n\n\n\n
Autotrophic Nutrition<\/td>\nHeterotrophic Nutrition<\/td>\n<\/tr>\n
1. The organisms synthesize their own food from simple organic raw materials.<\/td>\n1. The organisms cannot synthesize their own food from simple inorganic, raw materials.<\/td>\n<\/tr>\n
2. For eg. all green plant are autotrophs.<\/td>\n2. For eg. all animals, human beings and non-green plants like bacteria and fungi.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Question 2.
\nWhere do plant get each of the raw materials required for photosynthesis ?
\nAnswer:
\nBreak-down of pryuvate using (CO2<\/sub>) takes place in the mitochondria. Exchange of gases takes place through stomata and water from soil through root hairs and light\/temperature from the sun and green colour from chlorophyll and the photosynthesis occurs in the grana of chloroplast and respiration in the stroma of chloroplast. So the required raw material for photosynthesis are :
\n(i) Sunlight, (ii) CO2<\/sub>, (iii) H2<\/sub>O (iv) Chlorophyll<\/p>\n

\"NCERT<\/p>\n

Question 3.
\nWhat is the role of the acid in our stomach ?
\nAnswer:
\nHCL
\n(a) It makes the medium acidic.
\n(b) Softens the food.
\n(c) Kill germs i.e., bacteria\/any foreign organism.<\/p>\n

Question 4.
\nWhat is the function of digestion enzymes ?
\nAnswer:
\nIn Mouth (i) Salivary Amylase: Starch (complex sugars) \u2192 Maltose
\nIn stomach (ii) (a) Pepsin \u2013 Proteins \u2192 peptones and proteoses
\n(b) Renin \u2013 Curdles milk (-nt in adults)
\n\"NCERT<\/p>\n

In Duodenum: 1. Bile juice \u2013 Alkaline \u2013 Emulsifies fat.
\n2. Pancreatic juice \u2013 do \u2013
\n(a) Trypsin : Proteins\u2192 Peptones
\nProteoses \u2192 Amino Acid and Peptides
\n(b) Amylosin : Complex sugars \u2192 monosaccharides
\n(c) Lipase : Fats \u2192 Fatty acids and glycerol<\/p>\n

In Small Intestine \u2013 Intestinal juice \u2013 Alkaline \u2013
\n(i) Erepsin : Peptides \u2192 Amino Acids
\n(ii) Invertase : Cane sugar \u2192 Glucose + Fructose
\n(iii) Lactase : Lactose \u2192 glucose + galactose<\/p>\n

Question 5.
\nHow is the small intestine designed to absorb digested food ?
\nAnswer:
\nSmall Intestine: Small intestine is about 6 metres in length and 2.5 cm in diameter. It remains coiled in the abdominal cavity. The small intestine consists of three parts.<\/p>\n