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प्रश्न
Make a comparison and write down ways in which plant cells are different from animal cells.
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उत्तर
| Plant Cell | Animal Cell | |
| 1. | It is usually larger than an animal cell. | It is usually smaller in size. |
| 2. | It has a cell wall. | It does not have a cell wall. |
| 3. | It contains chloroplasts. | Chloroplasts are absent. |
| 4. | Plastids are present. | Plastids are absent. |
| 5. | Centrosome and centrioles are absent. | Centrosome and centrioles are present. |
| 6. | The nucleus is located near the cell wall. | The nucleus is located in the center. |
| 7. | Vacuoles are very large. | Vacuoles are small. |
| 8. | The Golgi apparatus is made up of separate units called dictyosomes. | There is a single Golgi apparatus that is easily visible and has a complex and developed structure. |
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संबंधित प्रश्न
Write short notes on the following.
Cytoplasm
Which part of the cell contains organelles?
Where are chromosomes found in a cell? State their function.
What is the cell theory? Who propounded it and when?
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
What was the contribution of the following to our knowledge of cells?
Robert Hooke
Expand - SER
Expand - RER
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 |
I take part in food production of a cell. Who am I? ____
