Which Statement Is Accurate About How C ₄ Plants Are

question 17

Multiple Choice

Which statement is accurate about how C ₄ plants are able to survive hot, dry spells during the growing season?

• A) When the stomata close during the heat of the day, RuBP carboxylase(rubisco), which is located in the bundle sheath cells, is not exposed to the increasing oxygen concentration in the leaf spaces. This prevents RuBP carboxylase from binding to oxygen instead of carbon dioxide.
• B) When the stomata close during the heat of the day, RuBP carboxylase (rubisco), which is located in the mesophyll cells,is exposed to the increasing oxygen concentration in the leaf spaces. This help facilitate the binding of RuBP carboxylase to oxygen.
• C) When the stomata are open during the heat of the day, RuBP carboxylase (rubisco), which is located in the bundle sheath cells, is equally exposed to both the carbon dioxide and the oxygen in the leaf spaces.
• D) When the stomata close during the heat of the day, RuBP carboxylase (rubisco), which is located in the bundle sheathcells,is exposed to the increasing oxygen concentration in the leaf spaces. This help facilitate the binding of RuBP carboxylase to oxygen.
• E) When the stomata close during the heat of the day, RuBP carboxylase (rubisco), which is located in the bundle sheath cells,is exposed to the increasing oxygen concentration in the leaf spaces. This help facilitate the binding of RuBP carboxylase to oxygen.

---

Definitions:

Sherman Antitrust Act

A landmark federal statute passed in the United States in 1890 aimed at preserving free competition by prohibiting monopolistic business practices.

Government Employee

An individual who works within the public sector, employed by government departments or agencies.

Right-to-Work State

A U.S. state where laws prohibit union security agreements between companies and workers' unions, meaning employment cannot be conditioned on union membership or dues payment.

Retailing

The process of selling consumer goods or services to customers through multiple channels of distribution to earn a profit.