Let speed of train B be ‘x’ km/hr. According to question, => 20(36 + x) × (5/18) = 400 => 720 + 20x = 1440 => 20x = 720 => x = 36 km/hr
National pest of india is
The scientific name of dammer bee is
Elytra are the modified, hardened front wings of _____
What is the term used to describe the level of population density at which control measures should be implemented to prevent a rising pest population fr...
Which of the following is not a natural predator of BPH?
Pebrine disease of silkworm is caused by
The headquarter of Central Silk Board is located at
The type of glands associated with the insect's head appendages is primarily responsible for silk production in certain insect larvae is
Larvae of _____________ causes damage in redgram by webbing together flowers, pods and leaves with frass often on pods and shoot tips.
Which of the following statements is true about Entomology?
