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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

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

Which of the following statements of the fern life cycle is false?

a. Sporangia produce haploid spores.

b. The sporophyte grows from a gametophyte.

c. The sporophyte is diploid and the gametophyte is haploid.

d. Sporangia form on the underside of the gametophyte.

What is the difference between extant and extinct?

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

a. green algae

b. red algae

c. brown algae

d. angiosperms

How do mosses contribute to returning nitrogen to the soil?

a. Mosses fix nitrogen from the air.

b. Mosses harbor cyanobacteria that fix nitrogen.

c. Mosses die and return nitrogen to the soil.

d. Mosses decompose rocks and release nitrogen.
See all solutions

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