IGNOU LSE 2 2026 - Outline the successive changes in animal life during Hydrosere.

Question

Outline the successive changes in animal life during Hydrosere.

28 Jan 2026

Answer :

Word Count : 493

Hydrosere refers to the sequence of ecological succession that begins in an aquatic habitat such as a pond, lake, or marsh and gradually leads to a terrestrial ecosystem. Along with changes in vegetation, there are distinct and successive changes in animal life, closely linked to the physical conditions of water, availability of food, and the structure of plant communities. Animal succession in hydrosere reflects increasing diversity, complexity, and specialization as the habitat shifts from open water to land. In the earliest stage, the phytoplankton stage, animal life is dominated by microscopic and simple aquatic organisms. Zooplankton such as protozoans, rotifers, and small crustaceans thrive by feeding on phytoplankton. Aquatic insects in their larval stages and simple molluscs may

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