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### Q.II. State the following statements are true or false. 1. A green toxic symbol possessing chemical has higher LD 50 Value. **True** 2. The Association between cross pollinated crops and insects is Mutual. **False** 3. Juvenile hormone is a naturally produced hormone in insects. **True** 4. Dif...

### Q.II. State the following statements are true or false. 1. A green toxic symbol possessing chemical has higher LD 50 Value. **True** 2. The Association between cross pollinated crops and insects is Mutual. **False** 3. Juvenile hormone is a naturally produced hormone in insects. **True** 4. Diflubenzuron is chitin synthesis inhibitor. **False** 5. Gossyplure is sex pheromone of Helicoverpa armigera. **False** 6. Tricogramma is a larval parasitoid. **False** 7. Antixenosis is plant character which attracts insects for feeding. **True** 8. The reaction of the insects to artificial light is phototrophic. **False** 9. Preying mantids feeds on larvae of lepidopterons. **False** 10. Naids and Adults of dragonflies are predators. **True** ### Q.III. Match the following | A | B | |---------------------------|----------------------------| | 1. Oil of citronella | Juvenoids | | 2. Allomone | Rachel corsen | | 3. Juvabione | Microbial Insecticide |