Chapter 25, Problem 1VCQ

Figure 25.6 Which of the following statements about plant divisions is false?

1. Lycophytes and pterophytes are seedless
vascular plants.

All vascular plants produce seeds.

All non-vascular embryophytes are bryophytes.

Seed plants include angiosperms and gym nosperms.

Summary Introduction

Introduction:

The kingdom Plantae comprises a large and diverse group of organisms. The plants are typically autotrophic because the presence of chlorophyll a and Chlorophyll b enable them to synthesize their own food by photosynthesis. During the course of evolution, complexity level of plants increased as the plant group consists of simple algal members to complex angiosperms.

Answer to Problem 1VCQ

Correct answer:

The correct answer is option (b) all vascular plants produce seeds.

Explanation of Solution

Explanation/justification for the correct answer:

Option (b) all vascular plants produce seeds. The land plants are categorized into two principal group namely vascular and non-vascular plants in accordance with the presence or absence of vascular tissue. The non-vascular plants are seedless although some vascular plants are also seedless for instance lycophytes and pterophytes. So, the correct answer is option (b).

Explanation for incorrect answer:

Option (a) Lycophytes and pterophytes are seedless vascular plants. Lycophytes and pteridophytes are classified under vascular plants but they do not produce seeds. Lycophytes include club mosses, quillworts, and spike mosses while pteridophytes comprise of whisk ferns, horsetails, and ferns. So, this is an incorrect option.

Option (c) all non-vascular embryophytes are bryophytes. The non-vascular plants are typically seedless and predominantly classified as bryophytes. This group comprises of liverworts, hornworts, and mosses. So, this is an incorrect answer.

Option (d) seed plants include angiosperms and gymnosperms. The vascular seed plants comprise of gymnosperms and angiosperms. The gymnosperms are flowerless and produce naked seeds while angiosperms are flowering plants and produce seeds enclosed within a fruit. So, this is an incorrect answer.

Conclusion

The statement all vascular plants produce seeds is false. Hence, the correct answer is option (b) all vascular plants produce seeds.