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Question
Which of the following has wormicidal properties?
Which of the following has wormicidal properties?
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Solution
The correct option is A Azolla
Azolla is a floating pteridophyte, which contains an endosymbiont- the nitrogen-fixing cyanobacterium Anabaena azolla. Azolla is either incorporated into the soil before rice transplanting or grown as a dual crop along with rice because it acts as wormicide or larvicide by controlling the mosquito larvae in the rice fields. Azolla plants grow as a thick mat on the surface of the water, making it more difficult for the larvae to reach the surface to breathe. In this way, Azolla acts as wormicide.
So, the correct answer is option A.
Azolla is a floating pteridophyte, which contains an endosymbiont- the nitrogen-fixing cyanobacterium Anabaena azolla. Azolla is either incorporated into the soil before rice transplanting or grown as a dual crop along with rice because it acts as wormicide or larvicide by controlling the mosquito larvae in the rice fields. Azolla plants grow as a thick mat on the surface of the water, making it more difficult for the larvae to reach the surface to breathe. In this way, Azolla acts as wormicide.
So, the correct answer is option A.
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