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Which of the following represents the accurate order of plant succession in a hydrosere, starting from open water to climax woodland?

1. Volvox, Hydrilla, Pistia, Scirpus, Lanatana, and Oak
2. Volvox, Pistia, Hydrilla, Scirpus, Lanatana, and Oak
3. Hydrilla, Volvox, Pistia, Scirpus, Lanatana, and Oak
4. Hydrilla, Pistia, Volvox, Scirpus, Lanatana, and Oak

Correct answer: Volvox, Hydrilla, Pistia, Scirpus, Lanatana, and Oak

Solution

The correct sequence of plants in a hydrosere is Volvox (phytoplankton stage), followed by Hydrilla (submerged stage), Pistia (floating stage), Scirpus (reed-swamp stage), Lantana (shrub stage), and Oak (climax forest stage). This sequence represents the ecological succession in a freshwater body.

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