Who gave Phases Theory of Locust?

Correct option is A

· Correct answer: (a) Uvarov
· Uvarov formulated the Phases Theory of Locust, explaining the change in behavior of locusts from solitary to gregarious phases, which causes swarming and destruction in agriculture.
Other options:
· (b) Prasad: Not associated with the Phases Theory.
· (c) Karl Von Frisch: Known for his work on honeybees, not locusts.
· (d) Rev. Fr. Newton: Not related to the Phases Theory.