III. Vascular plants (pteridophyta)

EVOLUTION OF ROOTS

Instead of the rhizoids seen in bryophytes, roots evolved in the sporophytes of almost all vascular plants

TLS Online TPP Program

#Id: 8147

#XL - Q Biochemistry

A clathrin molecule,

called a triskelion, is composed of : 

Three heavy chains

Three light chains

TLS Online TPP Program

#Id: 8032

#XL - Q Biochemistry

Ornithine and citrulline, which are not found in proteins, are intermediates in the biosynthesis of arginine and in the urea cycle.

TLS Online TPP Program

#Id: 10080

#XL - T Zoology

Integrins bind extracellular matrix (ECM) glycoproteins, 

1. Laminins  

2. Collagens 

3. Fibronectin

4. Vitronectin

TLS Online TPP Program

#Id: 8641

#XL - R Botany

Rb binds the activation domains of a E2F transcription factors, in the cytoplasm to prevent them from turning on the genes required for cell cycle progression.

TLS Online TPP Program

#Id: 10617

#XL - R Botany

Classification of peteridophytes

IV.  Filicophyta(Ferns)