Phytopathogenic bacteria reside within the intercellular spaces of plant organs or in the xylem and many damage plant tissues by secreting toxins, extracellular polysaccharides (EPSs), or cell wall‐degrading enzymes.

TLS Online TPP Program

#Id: 10580

#XL - R Botany

Thallophyta

Largest group of plant kingdom.

not differentiated into stem, leaves and roots and no distinctive tissue systems.

mostly aquatic plants and found both in fresh and marine water due to absent of "true roots" and vascular tissue.

cell wall composed of cellulose around their cells.

Ex- Algae, Fungi and Lichens

TLS Online TPP Program

#Id: 9386

#XL - T Zoology

TLS Online TPP Program

#Id: 10067

#XL - T Zoology

Ca2+ ions bind to sites near each hinge and prevent it

from flexing, so that the whole string of cadherin domains behaves as a rigid and slightly curved rod to generate cell–cell adhesion

TLS Online TPP Program

#Id: 9943

#XL - T Zoology

Virulence is due to its potent exotoxin, which destroys the underlying tissue and results in heart, liver, and kidney damage, as well as to suffocation following formation of a tough fibrous membrane in the respiratory tract

TLS Online TPP Program

#Id: 9444

#XL - T Zoology