QUESTION: Which tissue of the leaf contains chloroplast?
ANS:
- Palisade mesophyll cells contain a high concentration of chloroplasts.
- The palisade mesophyll is situated just beneath the upper epidermis of the leaf, closer to the surface that receives the most sunlight.
- It is responsible for carrying out photosynthesis, the process by which plants convert light energy into chemical energy.
- The cells of the palisade mesophyll are elongated and columnar in shape.
- They are oriented vertically and are closely packed together.
- Chloroplasts are the cellular organelles responsible for capturing light energy and carrying out photosynthesis.
- The chloroplasts within palisade mesophyll cells have a complex structure.
- They contain chlorophyll pigments that capture light energy and other components necessary for the conversion of light energy into chemical energy.
| characteristic | Description |
| Location | · Upper part of the leaf just beneath the upper epidermis |
| Chloroplast Distribution | · High concentration of chloroplasts within the cells. |
| Function | · Primary site of photosynthesis in leaves.
· Converts light energy into chemical energy (glucose and other organic compounds). |
| Cell Arrangement | · Elongated and columnar-shaped cells
· Closely packed together |
| Chloroplast Structure | · Complex organelles containing chlorophyll pigments for capturing light energy and carrying out photosynthesis. |
| Light Absorption | · Maximizes exposure to sunlight due to its position in the leaf. |
| Adaptation | · Structural adaptation for efficient light absorption and maximizing photosynthetic activity in plants. |
| Examples | · Broadleaf plants (e.g., maple, oak)
· Many flowering plants (e.g., rose) |