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Bihar Board Class 10 (BSEB) Life Processes — practice questions — page 2

Explore 46 free Life Processes questions in Bihar Board Class 10 (BSEB) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Life Processes questions and exercises with answers

Showing questions 31–46 of 46.

A living body must keep moving molecules around even at rest because:Read the answer and worked solution →The pigment that captures light in photosynthesis is:Read the answer and worked solution →Bile is secreted by the:Read the answer and worked solution →Lactic acid builds up in human muscles during:Read the answer and worked solution →Aerobic respiration of one molecule of glucose produces approximately:Read the answer and worked solution →The villi in the small intestine help in:Read the answer and worked solution →Photosynthesis converts CO₂ and water into glucose using:Read the answer and worked solution →The human heart has how many chambers?Read the answer and worked solution →Blood vessels that carry blood AWAY from the heart are called:Read the answer and worked solution →In plants, water and minerals are carried upward by:Read the answer and worked solution →The basic structural and functional unit of the kidney is the:Read the answer and worked solution →Evaporation of water from leaf surfaces — the suction that helps pull water up the xylem — is called:Read the answer and worked solution →Why does the human heart have a complete septum between left and right sides?Read the answer and worked solution →In dialysis, the machine carries out the function of which organ?Read the answer and worked solution →Order the stages of respirationRead the answer and worked solution →Life processes, block by blockRead the answer and worked solution →

Worked practice questions

A living body must keep moving molecules around even at rest because:

  1. movement releases heat directly
  2. movement is unrelated to life
  3. movement repairs cell structures
  4. movement creates new species
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Correct answer: C. movement repairs cell structures

Living structures keep breaking down due to environmental wear. Constant molecular traffic repairs them — this maintenance is why molecular movement is the signature of life.

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The pigment that captures light in photosynthesis is:

  1. melanin
  2. haemoglobin
  3. carotene
  4. chlorophyll
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Correct answer: D. chlorophyll

Chlorophyll, in the chloroplasts of green leaves, absorbs sunlight (mostly red and blue) for photosynthesis.

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Bile is secreted by the:

  1. small intestine
  2. pancreas
  3. liver
  4. stomach
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Correct answer: C. liver

Bile is produced by the liver and stored in the gall bladder. It emulsifies fats in the small intestine.

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How to practise

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More Science topics

Light - Reflection and RefractionScienceOur EnvironmentChemical Reactions and EquationsThe Human Eye and the Colourful WorldElectricityCarbon and its CompoundsMetals and Non-metals