Q1 healthy individuals of paramecium bursaria contain

Reference no: EM13352312

Q1. Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. What time within their hosts, the algae are referred to as zoochlorellae. In aquaria with light coming from only one side, P. bursaria gathers at the well-lit side, whereas other species of Paramecium gather at the opposite side. The zoochlorellae provide their hosts with glucose and oxygen, and P. bursaria provides its zoochlorellae with protection and motility. P. bursaria can lose its zoochlorellae: (1) if kept in darkness, the algae die, and (2) if prey items (mostly bacteria) are absent from its habitat, P. bursaria will digest its zoochlorellae.

Which term precisely describes the behavior of Paramecium species that lack zoochlorellae in an aquarium with light coming from one side only?

a. negative chemotaxis
b. positive chemotaxis
c.negative phototaxis
d.positive phototaxis

Q2. Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body?

Reference no: EM13352312

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