Question

1. identify an example within the protists of the following:

(a) photosynthetic:
(b) pathogen:
(c) biological indicator:

Explanation:

• (a) Photosynthetic: Algae (e.g., diatoms) are protists that can perform photosynthesis. They contain chlorophyll and other pigments to convert light energy into chemical energy.
• (b) Pathogen: Plasmodium is a protist that causes malaria. It infects red blood cells in humans and is transmitted by mosquitoes.
• (c) Biological indicator: Diatoms are often used as biological indicators. Their presence, abundance, and species composition in water bodies can indicate the quality of the aquatic environment (e.g., nutrient levels, pollution).

Answer:

(a) Algae (e.g., diatoms)
(b) Plasmodium
(c) Diatoms