ish becomes unhealthy and deformed.
Exercise
.Fill in the blank.
1. Dropsy disease is caused by
(Costia/Aeromonas/Myxobolus)
............is one of the protozoan disease observed in Indian ca
(Gill rot/Fin rot/Costiasis)
3 Permanent algal blooms are constituted mostly by................ alga
(Green/Blue-green/green.)
Water hycinth is successfully controlled by
(2,4-D/DDT/Dimecron)
5. Nymphea is the
aquatic weed
(Emergent/Marginal/Floating)
Gulrot disease is caused by
(Saprolegnia/Branchyomyces/Costia)
Q1. Answer the following in one sentence.
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