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प्रश्न
Explain why chloroplasts are found only in plant cells?
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उत्तर
Chloroplasts are found only in plant cells. They contain a green pigment called chlorophyll. This green pigment is important for photosynthesis in green plants. This chlorophyll pigment traps solar energy and utilizes it to manufacture food for the plant.
संबंधित प्रश्न
A plant cell has a cell wall made of :
The cell organelle that helps in the respiration of the cell is :
What is the name of the chemical substance which constitutes the genes?
What is the cell theory? Who propounded it and when?
Write a short answer.
Why are mitochondria called the powerhouse of the cell?
Why was the invention of the microscope so important to the study of living beings?
Match the items in column A with the appropriate items in column B:
| column A | column B |
| 1. Platform or workplace for the synthesis of proteins | a. Golgi complex |
| 2. A powerhouse of cells | b. Ribosomes |
| 3. Help in the formation of cell plate during cell division | c. Chloroplast |
| 4. Site for photosynthesis | d. Mitochondria |
| 5. Control tower of cell | e. Chromosomes |
| 6. A structure bearing genes | f. Nucleus |
The instrument used to observe the cell is _____
Matching:
| 1. | Discovery of cell | a. | Nerve cell |
| 2. | Unicellular organism | b. | spirogyra |
| 3. | Multicellular organism | c. | Robert Hooke |
| 4. | Longest cell | d. | Cyanobacteria |
| 5. | Prokaryotic cell | e. | Amoeba |
