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Chapter 25: Q 30. (page 668)

What are the three classes of bryophytes?

Short Answer

Expert verified

Classification of bryophytes:

  • Hepaticopsida or liverworts
  • Anthocerotopsida or hornworts
  • Bryopsida or mosses

Step by step solution

01

Step 1. Introduction

  • Non-vascular plants are known as bryophytes.
  • They lack roots and vascular tissue, relying instead on the surface to collect water and nutrients from the air.
02

Step 2. Explanation

  • Hepaticopsida: Gametophyte plant is either thalloid or foliose. The leaves in foliose forms lack a midrib and are dorsiventral. (For example, Marchantia)
  • Anthocerotopsida: The gametophytic body is a basic thalloid that is flat, dorsiventral, and lacks internal differentiation. (For example, Anthoceros)
  • Bryopsida: Protonema and foliose gametophore are two types of gametophytes. Foliose leaves have no midrib and have no stem as an axis. (e.g. Funaria)

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Most popular questions from this chapter

In areas where it rains often, mosses grow on roofs. How do mosses survive on roofs without soil?

The land plants are probably descendants of which of these groups?

a. green algae

b. red algae

c. brown algae

d. angiosperms

Which plant is considered the most advanced seedless vascular plant and why?

Ferns are simultaneously involved in promoting rock weathering, while preventing soil erosion. Explain how a single plant can perform both these functions, and how these functions are beneficial to its ecosystem.

Microphylls are characteristic of which types of plants?

a. mosses

b. liverworts

c. club mosses

d. ferns
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