Q243
Which insect feeds on silk and developing cobs of maize?
A.
Spodoptera litura
B.
Helicoverpa armigera
AnswerC.
Mythmina separata
D.
Calocoris angustatus
Answer: Option B
Solution
Answer: Option B
Solution:
Helicoverpa armigera insect feeds on silk and developing cobs of maize.Helicoverpa armigera is an emerging pest of maize, especially in sweet corn. Eggs are spherical in shape and creamy-white in colour, laid singly on silk.
There are five or six larval stages. The larva shows colour variation from greenish to brown.