Average fitness

In a species, only 1 of every 1000 seeds survives to reproductive age, and that those that survive produce an average of 3000 seeds. 

TLS Online TPP Program

#Id: 10365

#XL - Q Biochemistry

Antigen pieces are held within the binding groove of a cell surface protein called the major histocompatibility complex (MHC) molecule which recognized by T cell

TLS Online TPP Program

#Id: 8872

#XL - R Botany

The entire process of mitotic CDKs activation and entry into mitosis involves two positive feedback loops and coordination between events at the centrosome, in the cytoplasm, and in the nucleus.

TLS Online TPP Program

#Id: 9750

#XL - R Botany

N-(17-hydroxylinolenoyl)-l-glutamine is an elicitor known as volicitin induces volatile secondary metabolites in maize plants.

TLS Online TPP Program

#Id: 10719

#XL - R Botany

Modifications to carry on special mechanical functions

1. Prop Roots- hanging structures that support a banyan tree

2. Stilt roots

Stilt roots of Sugarcane and Maize are supporting roots which arise from the lower nodes of the stem. These roots grow downwards and penetrate the soil and provide mechanical support to the plant.

Ex- Sugarcane  

3.Climbing roots

climbers can climb up their supports as adventitious roots growing from the nodes.

e.g., Pothos (money plant)

TLS Online TPP Program

#Id: 9279

#XL - R Botany

The binding of Nod factors to the Nod factor receptors (NFRs), which contain extracellular LysM motifs, initiates an interaction with the conserved SYMRK receptor-like kinases containing a leucine-rich repeat (LRR) domain.