Two varieties of maize averaging 50 and 20 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 35 inches in height. Out Of the 16 F2 plants, the 5 are 35 inches. What is the probable number of independent segregating polygenes involved in this trait?

#Question id: 10355

#Unit 6. System Physiology – Plant

The conversion of ammonium to amino acids requires two enzymes such as GS and GOGAT,

a) High levels of light and carbohydrate—conditions that stimulate plastid GS and Fd-GOGAT

b) Conditions of ample energy inhibit GS and GOGAT

c) The stimulation of GS and GOGAT, they favor nitrogen assimilation into glutamine and glutamate, compounds that are rich in carbon and participate in the synthesis of new plant materials

d) In energy-limited conditions inhibit GS and GOGAT

Which of the following statements about GS and GOGAT is correct?

#Question id: 10356

#Unit 6. System Physiology – Plant

Why the GS  and GOGAT is activated in light and while the AS is inhibited?

#Question id: 10357

#Unit 6. System Physiology – Plant

Why the glutamine and glutamate will not be transported while  asparagine will prefer to be transported?

#Question id: 10358

#Unit 6. System Physiology – Plant

Which of the following essential micronutrients is associated with nitrate reductase enzyme found in higher plants?

#Question id: 10359

#Unit 6. System Physiology – Plant

Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;

#Question id: 10360

#Unit 6. System Physiology – Plant

How much ATP require in the nitrogen fixation or conversion of ammonium assimilation in the system?