Question

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

Answer 1

Correct Answer - Option 2 : leucoplasts

Explanation:

• 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

• 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

• 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.