Solutions 6. Life Processes - Chapter Review | Class 10 Science - Toppers Study

Chapter-review: 

• The processes which together perform for maintenance job are
  life processes.
• Since these maintenance processes are needed to prevent damage
  and break-down, energy is needed for them.
• Multicellular organisms have specialised tissue for different jobs like transportation, excreation and digestion etc. 
• Outsidee raw materials are carbon dioxide and water that are used by organisms. 
• The proccess by which organisms take their food and get energy for life process is known as nutrition. 
• There are two types of nutrition: (i) Autotrophic nutrition (ii) Hetrotrophic nutrition. 
• There are three types of Hertrotrophic nutrition: (i) Saprophytic nutrition (ii) Holozoic Nutrition (iii) Parasitic nutrition.
• The nutrition in which organisms make their own food itself by the photosynthesis is called autotrophic nutrition. 
• The nutrition in which organisms take their food by autotrophs or other sources is known as hetrotrophic nutrition. 
• Holozoic nutrition: Animals take in solid food and breakdown or obsorb it inside the body. Amoeba and animals. 
• Saprophytic nutrition: The nutrition in which organisms feed on dead and decaying materials. Like bacteria and Moosrooms etc. 
• Paracytic nutrition: Some organisms live inside or outside of other organisms which is called host and derive ntrition from host. Like Tape worms, Lice in animals and cuscuta in plants. 
• Amoeba move with the help of pseudopodia (extension of cell
  membrane).
• Amoeba digests food in the food vacuole. 
• The human digestive system comprises of alimentary canal and associated digestive glands.
• The pancreas secretes pancreatic juice which contains enzymes like trypsin for digesting proteins and lipase for breaking down emulsified fats.
• The inner lining of the small intestine has numerous finger-like projections called vill.
• The process takes place in the presence of air (oxygen), it is called aerobic respiration.
• The process takes place in the absence of air (oxygen), it is called anaerobic respiration.
• The energy released during cellular respiration is immediately used
  to synthesise a molecule called ATP.
• Blood is a fluid connective tissue.
• The body temperature depends on the temperature in the environment.
• The biood goes through the heart twice during each cycle in other vertebrates. This is known as double circulation.
• The force that blood exerts against the wall of a vessel is called blood pressure.
• The pressure of blood inside the artery during ventricular systole (contraction) is called systolic pressure.
• The pressure in artery during ventricular diastole (relaxation) is called diastolic pressure.
• The normal systolic pressure is about 120 mm of Hg and diastolic pressure is 80 mm of Hg.
• Blood pressureis measured with an instrument called sphygmomanometer.
• The smallest vessels have walls which are one-cell thick and are called capillaries.
• Lymph is another type of fluid also involved in transportation. This is
  called lymph or tissue fluid.
• Each kidney has large numbers of these filtration units called nephrons.