PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. What causes the opening and closing of guard cells of stomata during transpiration?
a. The passage of ions in and out of the guard cells causes the stomata to open and close during transpiration.
b. The stomata open when water travels through the guard cells, causing them to expand and become .
c. When guard cells cause water to exit the cell, the stomata pore shuts and the guard cells .
2. What is cohesion?
Cohesion is the force of that exists between molecules.
3. Trace the pathway followed by water molecules from the time it enters a plant root to the time it escapes into the atmosphere from a leaf.
a. The water enter the plants through .
b. This increases the concentration of the water molecules inside the root hair cells than the .
c. Due to this, the water from the root hair cells moves to the cortex by .
4. What would happen to the leaves of a plant that transpires more water than its absorption in the roots?
If transpiration exceeds the absorption rate, the stomata , the cells lose , and the plant wilts.
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