Which of the following is/are aquatic weeds?
Types of aquatic weeds : a. Floating weed i. Water velvet (Azola pinnata) ii. Water hyacinth (Echhornia crassipes) iii. Water lettuce (Pistia spp) iv. Water fern (Salvinia molesta) b. Rooted weed with floating leaves: i. Lotus (Nelumbo nucifera) ii. White water lily (Nymphaea alba) c. Submerged weeds: i. BGA (Anabaena spp.) ii. Pond weed (Potamogeton spp.) iii. Hydrilla d. Emergent weeds i. Typha spp ii. Ipomea spp
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