Science Qs pls ans
Dear student,
1.Stomata are tiny pores present mainly on the surface of leaves. They are also present on the surface of young stems and roots. Stomata consist of a stomatal opening or stoma, which is surrounded by two distinct epidermal cells known as guard cells. The opposing inner walls of the guard cells are thick and inelastic. The remaining walls are thin and elastic.
2. The opening and closing of stomata depend upon the turgor pressure in the guard cells. The swelling of guard cells due to the absorption of water causes the opening of stomatal pores while shrinking of guard cells closes the pores.
4. The pigment that absorbs sunlight is chlorophyll while the cell organelle necessary for photosynthesis is the chloroplast.
Please post rest of the questions in a separate thread.
Hope this clears your doubt.
Regards.
1.Stomata are tiny pores present mainly on the surface of leaves. They are also present on the surface of young stems and roots. Stomata consist of a stomatal opening or stoma, which is surrounded by two distinct epidermal cells known as guard cells. The opposing inner walls of the guard cells are thick and inelastic. The remaining walls are thin and elastic.
The main functions of stomata are:
- Exchange of gases (for photosynthesis and respiration)
- Transpiration (Removal of water from leaf surface)
2. The opening and closing of stomata depend upon the turgor pressure in the guard cells. The swelling of guard cells due to the absorption of water causes the opening of stomatal pores while shrinking of guard cells closes the pores.
4. The pigment that absorbs sunlight is chlorophyll while the cell organelle necessary for photosynthesis is the chloroplast.
Please post rest of the questions in a separate thread.
Hope this clears your doubt.
Regards.