Use the following information to answer the question.
Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. When within their hosts, the algae are referred to as zoochlorellae. In aquaria with light coming from only one side, P . bursaria gather 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 in two ways: (1) if kept in darkness, the algae will die; and (2) if prey items (mostly bacteria) are absent from its habitat, P . bursaria will digest its zoochlorellae.
Which term most accurately describes the nutritional mode of healthy P . bursaria? (A) photoautotroph (B) photoheterotroph (C) chemoautotroph (D) mixotroph

Question

23-08-2022
Biology

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Use the following information to answer the question.
Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. When within their hosts, the algae are referred to as zoochlorellae. In aquaria with light coming from only one side, P . bursaria gather 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 in two ways: (1) if kept in darkness, the algae will die; and (2) if prey items (mostly bacteria) are absent from its habitat, P . bursaria will digest its zoochlorellae.
Which term most accurately describes the nutritional mode of healthy P . bursaria? (A) photoautotroph (B) photoheterotroph (C) chemoautotroph (D) mixotroph

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if kept in darkness, the algae will die; and if prey items (mostly bacteria) are absent from its habitat, P . bursaria will digest its zoochlorellae. mixotroph term most accurately describes the nutritional mode of healthy P . bursaria

What is mixotroph ?

A mixotroph is an organism that has more than one trophic mode, ranging from complete autotrophy at one end to heterotrophy at the other, and can utilize a variety of different sources of energy and carbon. Mixotrophs are thought to make up more than half of all tiny plankton. Eukaryotic mixotrophs can either have their own chloroplasts or endosymbionts, and they can either acquire them by kleptoplasty or by taking over the entire phototrophic cell.

Photo- and chemotrophy, litho- and organotrophy (osmotrophy, phagotrophy, and myzocytosis), auto- and heterotrophy, or other combinations of these are all potential pairings. Prokaryotic or eukaryotic mixotrophs are also possible. They can benefit from several environmental factors.

When a trophic mode is required, it is

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