When stomata open, the pH of guard cells :-[Uttaranchal PMT 2004]
Water lost in guttation is :- [Uttaranchal PMT 2004]
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Which of the follwoing elements are essenial fo the photolysis of water :- [Uttaranchal PMT 2004]
Plant hormones are :- [Uttaranchal PMT 2004]
The most common auxin is :- [Uttaranchal PMT 2004]
Gibberellin promotes cell division and elongation in : [Uttaranchal PMT 2004]
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called :- [Uttaranchal PMT 2004]
Which of the follwing is used for ripening of fruits [Uttaranchal PMT 2004]
Induction of flowering in plants by low temperature treatment is called : [Uttaranchal PMT 2005]
Hormone produced during leaf fall is : [Uttaranchal PMT 2005]
Climacteric fruit shows : [Uttaranchal PMT 2004]
What will happen if plant cells are placed in hypertonic solution : [Uttaranchal PMT 2005]
Loss of water from tips of leaves is called : [Uttaranchal PMT 2005]
Root pressure is measured by : [Uttaranchal PMT 2005]
Which of the following is releated with transfer of food material : [Uttaranchal PMT 2005]
Which of the following apparatus is commonly used to measure the rate of transpiration is : [Uttaranchal PMT 2006]
Genetically dwarf plant can be converted into a plant of normal height with the application of : [Uttaranchal PMT 2006]
A phytohormone involved in the de novo synthesis of a-amylase in germinating seeds is : [Uttaranchal PMT 2006]
Which of the following element is most mobile in plant metabolism : [Uttaranchal PMT 2006]
The process of converting ammonia to nitrate by bacteria is known as : [Uttaranchal PMT 2006]
Root nodules which are present in plants are meant for fertilizers and are found in/on : [Uttaranchal PMT 2006]
Agriculturists have reported about 40-50% higher yields of rice by applying :[Uttaranchal PMT 2006]
A nutrient element essential for the formation of micro-tubules of the mitotic spindle apparatus during cell division is : [Uttaranchal PMT 2006]
Phytochrome is responsible for : [West Bengal JEE 2007]
Which of the following is a gaseous hormone :
Non-symbiotic N2 fixer is :[West Bengal JEE 2007]
The hydrostatic pressure which is developed due to accumulation of water absorbed by roots is called
Leaves of Nelumbo plant are: [West Bengal JEE 2007]
Which of the following physical forces are supposed to be responsible for ascent as sap?