Use the Following Information to Answer the Question

question 68

Multiple Choice

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 process in Paramecium results in genetic recombination but no increase in population size?

• A) budding
• B) meiotic division
• C) conjugation
• D) binary fission

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Definitions:

Price Change

A variation in the cost of goods and services in a market, influenced by factors such as supply and demand, inflation, or governmental policy.

Charitable Giving

The act of giving money, goods, or time to the unfortunate, either directly or by means of a charitable trust or other worthy cause.

Income Effect

The change in consumption resulting from a change in real income, which can stem from increases or decreases in wages, or from price changes affecting the purchasing power of income.

Substitution Effect

The change in consumption resulting from a change in the price of a product, leading consumers to substitute that product with another.