Final answer:
Plasmodium is a parasitic organism causing malaria, known for evading the host immune system. Apicomplexans like Plasmodium have a unique apical complex for infecting host cells.
Explanation:
Plasmodium is the genus that includes the causative agent for malaria, making it a parasitic organism. Plasmodium falciparum, specifically, evades the host immune system by altering its surface proteins with each generation.
Additionally, Plasmodium, Toxoplasma, and other members of this group contain an organelle called the apicoplast, inherited from a common ancestor that acquired it through engulfing a chloroplast.
Figure 5.12 illustrates the characteristic apical complex of apicomplexans like Plasmodium, enabling them to infect host cells.
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