Platelet-activating factor released from basophils and stimulates platelet aggregation and the release of vasoconstrictor serotonin from platelets.

TLS Online TPP Program

#Id: 8095

#XL - T Zoology

Platelet-activating factor released from basophils and stimulates platelet aggregation and the release of vasoconstrictor serotonin from platelets.

TLS Online TPP Program

#Id: 9789

#XL - R Botany

There is two kind of photo response

1. Red/Far-red 

2. Blue Light

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#Id: 9790

#XL - R Botany

TLS Online TPP Program

#Id: 9791

#XL - R Botany

TLS Online TPP Program

#Id: 9792

#XL - R Botany

Effect of light is Photomorphogenesis

 A decrease in the rate of stem elongation

The beginning of apical-hook straightening

The initiation of the synthesis of pigments

TLS Online TPP Program

#Id: 9793

#XL - R Botany

TLS Online TPP Program

#Id: 9794

#XL - R Botany

Phytochromes are photoreceptors that absorb red and far-red light most strongly (600–750 nm)

they also absorb blue light (350-500 nm) and UV-A radiation (320–400 nm).