The Arthus reaction is characterized by an intense infiltration by:

TLS Online TPP Program

#Question id: 13221

#Unit 6. System Physiology – Plant

There are two main types of water-transporting cells in the Xylem,

TLS Online TPP Program

#Question id: 13222

#Unit 6. System Physiology – Plant

More mature regions of the root often have an outer layer of protective tissue, called an

TLS Online TPP Program

#Question id: 13223

#Unit 6. System Physiology – Plant

At the endodermis, which pathway is blocked by the Casparian strip

TLS Online TPP Program

#Question id: 13224

#Unit 6. System Physiology – Plant

Suberin is

TLS Online TPP Program

#Question id: 13225

#Unit 6. System Physiology – Plant

 The three elements are not considered mineral nutrients these are-

TLS Online TPP Program

#Question id: 13226

#Unit 6. System Physiology – Plant

Mengel and Kirkby  have proposed that the essential elements be classified instead according to their biochemical role and physiological function, It shows such a classification, in which plant nutrients have been divided into some basic groups these are;

a.) The first group is nutrients that are part of carbon compounds

b.) The second group is important in energy storage reactions or in maintaining structural integrity

c.) The third group has important roles in reactions involving electron transfer or redox reaction

d.) The fourth group is present in plant tissue as either free ions or ions bound 

Which one of the following group represents CORRECT statements