Which of the following is the characteristic of liquid which travels in the xylem?
Pure water
Dilute solution with 0.1-1% dissolved salts
Concentrated solution with 25 % dissolved salts
Acidic
In woody plants, gas exchange takes place takes place through:
Stomata
Lenticels
Cuticle
Sieve tube
Which of the following are characteristics of cacti?
Succulent stem
Hairy leaves
Stomata open during the day
All of the above
Which of the following forces water up from the stem from the root?
Root pressure
Turgor pressure
Gravity
Transpiration
Which of the following statements is NOT correct?
In day light the stomata are open
Transpiration speeds up when light intensity increases
Sunlight increases the evaporation from leaves
In the day light stomata are closed
