List of top Plant Sciences Questions on Plant Physiology

Which combinations of the following statements about Abscisic Acid (ABA) in plants are correct?
• [(A).] ABA is important for plant development and desiccation tolerance. 
• [(B).] ABA influences the expression of various genes, including the gene for Late Embryogenesis Abundant (LEA) proteins. 
• [(C).] ABA also regulates the closure of aquaporins. 
• [(D).] Like GAs, the ABA also strongly promotes early flowering in plants. 
Choose the correct answer from the options given below: 
 

Given below are two statements :
Statement (I) : During photosynthesis, light energy is used to produce ATP and NADPH during the light-dependent reactions.
Statement (II) : ATP and NADPH produced in the light-dependent reactions are used to break down glucose into carbon dioxide and water during light-independent reactions.
In light of the above statements, choose the most appropriate answer from the options given below.
Which one is NOT correct with respect to transpiration in plants ?
The plant pigment, which is associated with the photoperiodism in plants is -
Which of the following association is favourable for P nutrition in higher plants ?
Which one of the following is NOT a component of heat stress tolerance in crop plants ?