Question

The video describes a coevolutionary arms race between the Plasmodium parasite and its human hosts.

Answer 1

One example of a coevolutionary arms race is when faster deer evolve and favor wolves and cougars that have stronger eyesight and senses of smell is a true statement.

Archaeplastids, which include red and green algae and land plants, are thought to have descended from a heterotrophic protist that engulfed a cyanobacterium.

Explanation:

Co-evolution leads to two species influencing the adaptations of each other over time. Co-evolutionary arms race evolves reciprocal adaptation between species are repeated cyclically.  

Since the preys like the deer are faster, the predators have to be extra skillful to be better hunters. Hence, the predators like the wolves and cougar need to adapt themselves with better eyesight and sense of smell.

Archeaplastids are supergroups of eukaryotes. As per evolutionary lines, arecheaplastids were created due to endosymbiotic relationship between an eukaryotic cell and a cynabacterium which resulted in eukaryote engulfing the cyanobacterium.