Give reasons,why?
The movement of ions form endodermis to xylem is an active process.

Give reason,why? Quantum requirement in photosynthesis is 8.

Give the technical terms used for the following: It is the pressure development in tracheavy elements of xylem as a result of metabolic activities of root and considered to be an active process.

Give reason,why? Reduce form of NADP is abreviated at NADPH

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: In angiosperms the conduction of water is more efficient because their xylem has vessels. Reason: Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondira.

Give reason,why? C_4 plants show Kranz anatomy.

Give reasons,why? Nitrogen deficiency leads to formation of purple colour in stems etc.of some plants.

Give reason,why? Hill reaction is not the true form of light reaction.

Give reasons,why? Plants usually form urea and required the enzyme urease.

Give reason,why? The process of photorespiration has been considered as disadvatnageous to C_3 plants.