Based on one easily recognisable character such as-

simple morphological characters to classify plants into trees, shrubs and herbs by “Aristotle”

TLS Online TPP Program

#Id: 10570

#XL - R Botany

Morphological concept of species (Biological Nomenclature) is given by “Carolus Linnaeus”

TLS Online TPP Program

#Id: 8751

#XL - T Zoology

The protein p27 is intrinsically disordered. It wraps around and inhibits the action of several enzymes called protein kinases that facilitate cell division. 

TLS Online TPP Program

#Id: 9283

#XL - Q Biochemistry

Three factors are important in maintaining low O2 concentrations in nodules. 

First, entry of O2 into the nodule is controlled by a variable‐permeability barrier in the nodule parenchyma

TLS Online TPP Program

#Id: 10313

#XL - Q Biochemistry

The Immune system is a second line of defense against cancer formation

TLS Online TPP Program

#Id: 8612

#XL - R Botany

Phosphorylation of a critical threonine residue in the activation loop, Thr-160, allowing substrates to access the active site of the CDK