Cyanogenic glycosides represent a particularly toxic class of N-containing secondary metabolites. 

Upon tissue damage, these glycosides break down and release hydrogen cyanide (HCN). 

TLS Online TPP Program

#Id: 10717

#XL - R Botany

Modification of root

Storage roots

Epiphytic or Aerial absorbing Roots e.g., Orchids.

Assimilatory roots

Respiratory roots or pneumatophores

Sucking roots or haustoria

Storage roots

Tap roots of carrot, radish, turnip and adventitious roots of sweet potato, dahlia get swollen and store food

TLS Online TPP Program

#Id: 8433

#XL - T Zoology

Type of iteroparity

Seasonal iteroparity - have distinct breeding seasons 

Continuous iteroparity- reproduce at any time of the year. 

TLS Online TPP Program

#Id: 10805

#XL - R Botany

Tannins deter feeding by herbivores

Plant tannins also serve as defenses against microorganisms.

For example, the nonliving heartwood of many trees contains high concentrations of tannins that help prevent fungal and bacterial decay

TLS Online TPP Program

#Id: 8005

#XL - T Zoology

The Hutchinsonian niche is an "n-dimensional hypervolume", where the dimensions are environmental conditions and resources

                                                                                    

                                                                                              

TLS Online TPP Program

#Id: 8129

#XL - Q Biochemistry

Some other biologically active isoprenoid compounds or derivatives.