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Karnataka SSLC (Class 10) Life Processes — practice questions

Explore 17 free Life Processes questions in Karnataka SSLC (Class 10) 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 1–17 of 17.

Organisms that make their own food from simple inorganic substances are calledRead the answer and worked solution →Photosynthesis takes place in the cell organelle called theRead the answer and worked solution →The raw materials required for photosynthesis areRead the answer and worked solution →The breakdown of glucose in cells to release energy is calledRead the answer and worked solution →In humans, glucose is first broken down in the cytoplasm into a three-carbon molecule calledRead the answer and worked solution →Aerobic respiration takes place in theRead the answer and worked solution →During vigorous exercise, the anaerobic breakdown of pyruvate in our muscles producesRead the answer and worked solution →Oxygen is transported in human blood mainly byRead the answer and worked solution →In plants, water and minerals are transported upward from the roots by theRead the answer and worked solution →The exchange of gases in leaves takes place through tiny pores calledRead the answer and worked solution →The basic filtration unit of the human kidney is theRead the answer and worked solution →The enzyme in human saliva that begins the digestion of starch isRead the answer and worked solution →Most of the absorption of digested food into the blood occurs in theRead the answer and worked solution →The human heart is made up ofRead the answer and worked solution →The green pigment that captures light energy for photosynthesis isRead the answer and worked solution →The nitrogenous waste excreted in largest amount by the human kidney isRead the answer and worked solution →Order the stages of respirationRead the answer and worked solution →

Worked practice questions

Organisms that make their own food from simple inorganic substances are called

  1. autotrophs
  2. heterotrophs
  3. parasites
  4. saprophytes
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Correct answer: A. autotrophs

1. Green plants build food from CO₂ and water using sunlight. 2. Such self-feeding organisms are **autotrophs**. 3. Heterotrophs (animals, fungi) depend directly or indirectly on autotrophs. _Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch6 'Life Processes', §6.2_

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Photosynthesis takes place in the cell organelle called the

  1. mitochondrion
  2. chloroplast
  3. ribosome
  4. nucleus
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Correct answer: B. chloroplast

1. Photosynthesis needs the green pigment chlorophyll. 2. Chlorophyll is present in the **chloroplast**, so that is where photosynthesis occurs. 3. Mitochondria carry out respiration, not photosynthesis. _Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch6 'Life Processes', §6.2.1_

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The raw materials required for photosynthesis are

  1. oxygen and glucose
  2. nitrogen and water
  3. carbon dioxide and water
  4. carbon dioxide and oxygen
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Correct answer: C. carbon dioxide and water

1. In photosynthesis: CO₂ + H₂O → glucose + O₂ (using sunlight). 2. So the raw materials are **carbon dioxide and water**. 3. Oxygen and glucose are the products, not the raw materials. _Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch6 'Life Processes', §6.2.1_

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