|
Describe natural nitrogen fixation
|
|
0
|
548
|
July 22, 2016
|
|
How does nitrate assimilation occurs in plants?
|
|
0
|
799
|
July 22, 2016
|
|
Briefly describe the mechanism of biological nitrogen fixation
|
|
1
|
2432
|
July 22, 2016
|
|
Explain the mechanism of water absorption by plants
|
|
0
|
2358
|
July 22, 2016
|
|
What are the advantages and disadvantages of transpiration?
|
|
1
|
10302
|
July 22, 2016
|
|
Describe transpirational pull model of water transport in plants
|
|
0
|
2277
|
July 22, 2016
|
|
What is guttation ? How it is affected by root pressure?
|
|
0
|
1516
|
July 22, 2016
|
|
Describe the role played by protein pumps during active transport in plants
|
|
0
|
1279
|
July 22, 2016
|
|
State the various features of leaves that increase or decrease transpiration
|
|
0
|
584
|
July 22, 2016
|
|
What role does root pressure play in water movement in plants?
|
|
0
|
1835
|
July 22, 2016
|
|
What are the functions of turgor pressure ? OR Write the significance of turgor pressure
|
|
0
|
1611
|
July 22, 2016
|
|
Discuss the factors responsible for ascent of xylem sap in plants
|
|
0
|
4537
|
July 22, 2016
|
|
How do rise in temperature and wind velocity affect transpiration ? Write any two adaptations shown by plants to reduce transpiration
|
|
0
|
1354
|
July 22, 2016
|
|
What is wilting ? Briefly explain its types
|
|
0
|
5929
|
July 22, 2016
|
|
What are aquaporins?
|
|
0
|
1769
|
July 22, 2016
|
|
Why rate of transpiration increases with an increase in root-shoot ratio?
|
|
0
|
795
|
July 22, 2016
|
|
What are photoactive and scotoactive types of stomata?
|
|
0
|
7736
|
July 22, 2016
|
|
How is ascent of sap occurs?
|
|
0
|
742
|
July 22, 2016
|
|
Which metal element is involved in the opening and closing of stomata?
|
|
0
|
1648
|
July 22, 2016
|
|
Name the theory proposed by Dixon for ascent of sap
|
|
0
|
675
|
July 22, 2016
|
|
When does wilting occurs?
|
|
0
|
659
|
July 22, 2016
|
|
What is absorption lag?
|
|
0
|
1270
|
July 22, 2016
|
|
What is atmometer?
|
|
0
|
595
|
July 22, 2016
|
|
Why is energy required to develop root pressure?
|
|
0
|
1400
|
July 22, 2016
|
|
What is trans-membrane pathway?
|
|
0
|
548
|
July 22, 2016
|
|
Define translocation
|
|
0
|
1537
|
July 22, 2016
|
|
Explain the structure of stomata. What role do they play in transpiration ? OR
|
|
1
|
4317
|
July 22, 2016
|
|
Define osmotic pressure. Explain how it influences other components of cell water relations in plants
|
|
0
|
1600
|
July 22, 2016
|
|
Explain the mechanism of uptake of minerals by the plants
|
|
0
|
900
|
July 22, 2016
|
|
How are K+ ions helpful in the opening and closing of stomata ? Explain Malate or K+ ion pump hypothesis
|
|
0
|
13324
|
July 22, 2016
|