The insecticides and pesticides sprayed on leaves are :
Systemic
Organic
Cytological
Harmless
Which of the following statements is NOT true of transpiration?
It draws water up the stem
It draws dissolved salts up the stem
It draws food up the stem
It has a cooling effect on the leaves
Which of the following are characteristics of cacti?
Succulent stem
Hairy leaves
Stomata open during the day
All of the above
