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Name the cell organelles present only in plant cell in which starch, oils and protein granules are stored.
1. Chloroplasts
2. leucoplasts
3. Mitochondria
4. Chromosomes

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Correct Answer - Option 2 : leucoplasts


  • Plastids are only present in the plant cell.
  • Plastids are mainly of two types Chloroplasts and leucoplasts. 
  • Chloroplasts. containing the pigment chlorophyll.
  • Chloroplasts are also known as chromoplasts. 
  • In leucoplasts materials such as starch, oils, and protein granules are stored. 
  • Leucoplasts are mainly located in non-photosynthetic tissues of plants, such as roots, bulbs, and seeds.

So the correct option is leucoplasts.


  • Mitochondria are the sites of aerobic respiration.
  • They produce cellular energy in the form of ATP, hence they are called ‘power houses’ of the cell.
  • A series of chemical reactions occur in the cytoplasm as breakdown products from food digestion find their way into the cell.
  • This allows some of the energy stored up in these items to be released and integrated into ATP, the cell's universal energy source (adenosine triphosphate).
  • The remaining molecular fragments from this phase then reach the mitochondria, where they are converted to carbon dioxide and water through a complex sequence of steps.


  • Chromosomes are thread-like structures located inside the nucleus of animal and plant cells.
  • Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
  • Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.

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