The Gram (-) bacteria detect and respond to the chemicals in their surroundings by
muramic acid
lipopolysaccharide
volutin granules
porin
D.
porin
In cell wall of Gram-negative bacteria, the peptidoglycan layer is very thin. The outer membrane is a bilayered structure consisting chiefly of phospholipids, proteins and lipo-polysaccharides. The permeability of outer membrane to nutrients is provided by proteins called porins, which form channels in the membrane.
Plants purify air by which process?
Photorespiration
Photosynthesis
Photophosphorylation
Transpiration
Which one of the following statement correctly define the term homonym?
Identical name of two different taxon
Two or more names belonging to the same taxon
When species name repeats the generic name
Other name of a taxon given in a language other than the language of zoological/ botanical nomenclature
Mesoglia is seen in between
ectoderm and endoderm
ectoderm and mesoderm
mesoderm and endoderm
just below mesoderm
One of the characteristic of sieve tube is
it is a part of phloem
function is transport of inorganic solutes
it is dead cell
sieve plate is not present
