Exam 21: Plants and People

During the twentieth century, the two factors that played a major role in increasing crop production were the Haber-Bosch process and the introduction of hybrid maize seeds.

Perennial versions of important grain crops have greater root mass than the annual versions.

Spices are usually derived from parts of a plant other than the leaves.

Coffee was first cultivated in Brazil.

Which of the following statements about coffee is FALSE?

Manioc was first domesticated in the tropics of Asia.

Sugarcane was first domesticated in:

Wild species of cereals hold their seeds less tightly than do domesticated species.

______ of the 20 amino acids required by human adults must be obtained from food.

Plantains are a ______ variety of ______ first cultivated in tropical Asia.

The ______ was first cultivated in Central and South America then carried to New Zealand, Hawaii, and other Pacific islands.

Cotton was domesticated independently in the New World and the Old World.

______ is an herb that is a member of the mint family.

Which of the following statements about cotton is FALSE?

About 25 percent of commonly available prescription drugs are derived from plants.

Which of the following was NOT a consequence of the development of agriculture?

The African Green Revolution now focuses on increasing yields for a wide range of crops instead of wheat and rice.

The Haber-Bosch process is important in the:

The domestication of squash occurred first in North America and later in South America.

Wild bananas have large, hard seeds.