Mention a few aquatic plants found in a pond.

1. Water Lilies (Nymphaea spp. and Nelumbo spp.): Water lilies are iconic aquatic plants known for their large, round leaves and showy, fragrant flowers. They typically float on the surface of the water or have leaves and flowers that emerge above the water's surface.

2. Water Hyacinth (Eichhornia crassipes): Water hyacinth is a free-floating aquatic plant with glossy, rounded leaves and clusters of lavender or violet flowers. It floats on the water's surface and reproduces rapidly, making it invasive in some regions.

3. Duckweed (Lemna spp. and Spirodela spp.): Duckweed is a small, free-floating aquatic plant with tiny, rounded leaves that float on the surface of the water. It reproduces quickly and can form dense mats, providing habitat for aquatic organisms.

4. Water Lettuce (Pistia stratiotes): Water lettuce is a floating aquatic plant with rosettes of light green leaves that resemble lettuce. It floats on the water's surface and reproduces through daughter plants that form at the base of mature rosettes.

5. Waterweed (Elodea spp. and Hydrilla verticillata): Waterweed is a submerged aquatic plant with thin, branching stems and whorls of narrow leaves. It grows entirely beneath the water's surface and provides habitat for aquatic insects and fish.

6. Cattails (Typha spp.): Cattails are emergent aquatic plants with long, slender leaves and cylindrical flower spikes. They grow along the margins of ponds and other wetland habitats, providing cover and nesting sites for birds and other wildlife.

7. Horsetail (Equisetum spp.): Horsetail is a primitive, rhizomatous plant that grows in shallow water or moist soil along pond edges. It has hollow, segmented stems and produces spore-bearing cones at the tips of fertile stems.

8. Water Hawthorn (Aponogeton distachyos): Water hawthorn is a submerged aquatic plant with dark green, strap-like leaves and fragrant white flowers that float on the water's surface. It blooms during the cooler months of the year.

These are just a few examples of the diverse range of aquatic plants that can be found in ponds. They play important roles in pond ecosystems, providing oxygen, shelter, and food for a variety of aquatic organisms.