Following statements are regarding to Integrins receptors;

a. Integrins are the principal receptors used by animal cells to bind to the extracellular matrix. 

b. Integrins function as transmembrane linkers (integrators) between the extracellular matrix and the actin cytoskeleton. 

c. An integrin molecule is composed of four covalently associated transmembrane glycoprotein subunits called α2 and β2.

d. Integrins bind extracellular matrix (ECM) glycoproteins, Laminins, Collagens, Fibronectin and Vitronectin.

Which of the following statements are incorrect?

TLS Online TPP Program

#Question id: 29484

#Unit 6. System Physiology – Plant

Physiological action of Cytokinins is given

a. Induce cell division in callus cells in the presence of an auxin 

b. Promote bud or root formation from callus cultures 

c. Delay senescence of leaves

d. Promote expansion of dicot cotyledons

Which of the following is correct

TLS Online TPP Program

#Question id: 29485

#Unit 6. System Physiology – Plant

Which of the following is not an example of Isoprenoid cytokinins

TLS Online TPP Program

#Question id: 29486

#Unit 6. System Physiology – Plant

Which of the following is examples of Aromatic cytokinins 

a. ortho-Topolin (oT), meta-Topolin (mT), Benzyladenine (BA

b. ortho-Methoxytopolin, meta-Methoxytopolin

c. trans-Zeatin (tZ), Dihydrozeatin (DZ)

d. cis-Zeatin, trans-Zeatin (tZ)

Which of the following is correct

TLS Online TPP Program

#Question id: 29487

#Unit 6. System Physiology – Plant

Some statement is given related to cytokinin

a. iP and tZ are active, and their derivatives are abundant

b. iP and tZ are inactive, and they are not abundant

c. iP and tZ are susceptible to degradation by CK oxidase (CKX). 

d. all cZ‐type CKs are derived from tRNA degradation in cZ‐abundant plant species

Which of the following is INCORRECT

TLS Online TPP Program

#Question id: 29488

#Unit 6. System Physiology – Plant

iPRTP or iPRDP is converted to ZTP or ZDP respectively by

TLS Online TPP Program

#Question id: 29489

#Unit 6. System Physiology – Plant

The ribotide and riboside forms of trans-zeatin can be interconverted, and free transzeatin can be formed from the ribotide by the