III.Vascular plants  (pteridophyta)

Homosporous or Heterosporous

Sexual reproduction- Oogamous

Antheridium-  Sessile and reduced in size

Haplodiplontic-  alteration of generation

Spores produced inside the sporangia on leaves

TLS Online TPP Program

#Id: 8014

#XL - T Zoology

Proportional similarity values of less than 0.70 have been taken to indicate possible coexistence

While those greater than 0.70 indicate competitive exclusion.

TLS Online TPP Program

#Id: 10318

#XL - Q Biochemistry

Cytotoxic T cells release granules containing the proteins perforin and granzyme-B. 

TLS Online TPP Program

#Id: 9637

#XL - T Zoology

GRB2 is an adapter protein, serves as a link, or scaffold, between the activated receptor and Sos

TLS Online TPP Program

#Id: 9994

#XL - T Zoology

The Wnt-Ca2+ pathway is initiated by Frizzled receptors activating a classical G protein-coupled signaling pathway.

TLS Online TPP Program

#Id: 8765

#XL - T Zoology

Disulfide bonds are believed to increase the stability of the native state by decreasing the conformational entropy of the unfolded state due to the conformational constraints imposed by cross-linking (i. e. decreasing the free energy of the unfolded state).