Chapter 21, Problem 28A

Summary Introduction

To write:

The correct vocabulary term of underlined word in the given sentence.

Introduction:

The lifespan of all plants are determined genetically and reflect adaptations for surviving harsh conditions. Depending upon the lifespan plants can be classified into three divisions. They are annual plants, biennial plants and perennial plants.

Explanation of Solution

Perennial plants can live for several years and generally produce flowers and seeds yearly. Some perennials respond to harsh conditions by dropping leaves; otherwise their aboveground structures die. They resume growth when favorable growing conditions occur. Shade and fruit trees, irises, roses, shrubs, peonies, and different types of berries belong to perennial plants.

Conclusion

Thus, the word “perennial” replaces the word “rhizome” from the given sentence.