Dragonflies are used to get rid of

Dragonflies are useful to get rid of

The Lady bird and Dragonflies are useful to get rid of ……… (A) Housefly and Mosquitoes (B) Aphids and Mosquitoes (C) Aphids and rotifers (D) Cockroach and Locust

The ladybird beetle and dragonflies are useful to get rid of ___ and ____ respectively.

The ladybird beetle and dragonflies are useful to get rid of ___ and ____ respectively.

lady bird beetle and dragon flies are useful to get rid of:

Which of the following organisms is used to get rid of mosquitoes from the fields ?

Which of the following organisms is used to get rid of mosquitoes from the fields ?

Name the biocontrol agents used to get rid of Aphids & mosquito larvae .