Types of pheromones which alert the insect from any danger known as__________________?

A. Entomophagous parasites
B. Zoophagous parasites
C. Phytophagous parasites
D. non of theses

A. Tropical region
B. Sub tropical
C. temperature region
D. None of the above

A. Tergum
B. Pleuron
C. Sternum
D. None of the above

A. Activator
B. Agitation
C. Adjuvant
D. Synergism

A. Larva
B. Adult
C. Pupae
D. Nympth

A. Johnston’s organ
B. Tympanal organ
C. Chorodotonal organ
D. None of the above