Companion cells transport of photosynthetic products from producing cells in mature leaves to the sieve elements in the minor veins of the leaf. There are at least three different types of companion cells in the minor veins of mature, exporting leaves, All three cell types have dense cytoplasm and abundant mitochondria;

TLS Online TPP Program

#Question id: 29455

#Unit 6. System Physiology – Plant

which of the following auxin derivates compound that provide broad‐spectrum control of fungal pathogens

TLS Online TPP Program

#Question id: 29456

#Unit 6. System Physiology – Plant

In maize kernels, IAA also appears to be synthesized by a tryptophan independent pathway via

TLS Online TPP Program

#Question id: 29457

#Unit 6. System Physiology – Plant

Covalent conjugation of amino acids to IAA can also result in permanent inactivation (storage or degradation), here certain combination is given (∧ shows conjugation)

a. IAA ∧ myo-inositol/Gluc/Ala/Leu/Me ---Reversible (storage)

b. IAA ∧ myo-inositol/Gluc/Ala/Leu/Me ---irreversible (degradation)

c. IAA ∧ oxIAA/GH3-Asp-Glu/3-Methyleneoxidole ---Reversible (storage)

d. IAA ∧ oxIAA/ GH3-Asp-Glu/3-Methyleneoxidole---irreversible (degradation)

Which of the following is correctly paired

TLS Online TPP Program

#Question id: 29458

#Unit 6. System Physiology – Plant

Which of the following is an essential for AUXIN transport in cell called as chemiosmotic model of auxin transport

TLS Online TPP Program

#Question id: 29459

#Unit 6. System Physiology – Plant

Which of the following protein involved in nondirectional auxin movement in shoot and root tip

TLS Online TPP Program

#Question id: 29460

#Unit 6. System Physiology – Plant

Naturally occurring auxin transport inhibitors are___

a. 1-NOA (1-naphthoxyacetic acid)

b. Quercetin (flavonol)

c. Genistein

d. NPA and TIBA

Which of the following is correct