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ICSE Class 9 Respiration in Plants — practice questions

Explore 27 free Respiration in Plants questions in ICSE Class 9 Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Respiration in Plants questions and exercises with answers

Showing questions 1–27 of 27.

Respiration in living cells primarily produces energy by breaking downRead the answer and worked solution →The energy currency of the cell isRead the answer and worked solution →Glycolysis takes place inside theRead the answer and worked solution →Krebs cycle takes place inside theRead the answer and worked solution →Aerobic respiration of one glucose molecule yields aboutRead the answer and worked solution →Anaerobic respiration in yeast producesRead the answer and worked solution →Anaerobic respiration in animal muscle during heavy exercise yieldsRead the answer and worked solution →Respiration differs from photosynthesis because respirationRead the answer and worked solution →Catabolic processes are those thatRead the answer and worked solution →The respiratory equation in plants isRead the answer and worked solution →Why is respiration in plants not the same as burning?Read the answer and worked solution →Gaseous exchange in plant leaves occurs mainly throughRead the answer and worked solution →In woody stems gaseous exchange takes place throughRead the answer and worked solution →Which experiment shows that CO2 is released during respiration?Read the answer and worked solution →During germination seeds respire actively. The dry matter of the seedling at firstRead the answer and worked solution →Which part of plants respires most actively?Read the answer and worked solution →Which substance is the final electron acceptor in aerobic respiration?Read the answer and worked solution →Respiration word huntRead the answer and worked solution →Run down the energy pathRead the answer and worked solution →Slice the oxygen-free stepsRead the answer and worked solution →Aerobic or anaerobicRead the answer and worked solution →Order the respiration stepsRead the answer and worked solution →The glycolysis sentenceRead the answer and worked solution →Respiration bingoRead the answer and worked solution →Respiration, true or falseRead the answer and worked solution →Quick respiration picksRead the answer and worked solution →Odd one out in respirationRead the answer and worked solution →

Worked practice questions

Respiration in living cells primarily produces energy by breaking down

  1. Glucose into carbon dioxide and water
  2. Proteins into amino acid building blocks
  3. Fats into glycerol and fatty acid chains
  4. Starch into hydrogen gas and oxygen
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Correct answer: A. Glucose into carbon dioxide and water

1. Section 7.1 names glucose as the main respiratory substrate. 2. Glucose breaks down to release energy stored in its bonds. 3. The end products are CO2 and water. 4. So option A is correct. _Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section 7.1_

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The energy currency of the cell is

  1. DNA, deoxyribonucleic acid
  2. ATP, adenosine triphosphate
  3. RNA, ribonucleic acid
  4. NADP, nicotinamide adenine dinucleotide phosphate
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Correct answer: B. ATP, adenosine triphosphate

1. The chapter calls ATP the energy currency of the cell. 2. ATP releases energy on conversion to ADP. 3. DNA and RNA carry information, not energy. 4. So option A is correct. _Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section 7.1 ATP_

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Glycolysis takes place inside the

  1. Nucleus next to chromatin
  2. Mitochondrial matrix only
  3. Cytoplasm of the cell
  4. Chloroplast thylakoid membrane
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Correct answer: C. Cytoplasm of the cell

1. Section 7.1 splits respiration into two phases. 2. Phase one is glycolysis, the breakdown of glucose to pyruvate. 3. It happens in the cytoplasm. 4. So option A is correct. _Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section 7.1 glycolysis_

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