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Kingdom Protista

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Topics

  • Introduction
  • Experiment

Introduction:

These are eukaryotes and unicellular. They can be autotrophic or heterotrophic. They have pseudopodia, hair-like cilia, or whip-like flagella for locomotion and mostly live in aquatic or moist environments, such as ponds, lakes, and soil. They can reproduce both sexually (exchange of genetic material) and asexually (by dividing).

Autotrophs, e.g., Euglena and Volvox (contain chloroplast).
Heterotrophs, e.g., Amoeba and Paramecium.

Organisms from Kingdom Protista

Experiment

1. Aim: To observe motile microbes, specifically amoebae, in a sample of pond water using a microscope.

2. Requirements: pond water sample, microscope (low and high power), glass slide, cover slip, dropper, tissue paper or blotting paper.

3. Procedure

  • Place a drop of pond water on a glass slide.
  • Cover it with a coverslip carefully.
  • Remove excess water using tissue paper.
  • Observe under low power, then switch to high power to view amoebae.

4. Conclusion

Motile microbes such as amoebae can be observed in a pond water sample. They are characterised by their irregular shape and constant movement, using extensions called pseudopodia for locomotion and capturing food.

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