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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

The dominant organism in fern is the ________.

a. sperm

b. spore

c. gamete

d. sporophyte

A botanist travels to an area that has experienced a long, severe drought. While examining the bryophytes in the area, he notices that many are in the same life-cycle stage. Which life-cycle stage should be the most common?

a. zygote

b. gametophyte

c. sporophyte

d. archegonium

Why do mosses grow well in the Arctic tundra?

a. They grow better at cold temperatures.

b. They do not require moisture.

c. They do not have true roots and can grow on hard surfaces.

d. There are no herbivores in the tundra

What seedless plant is a renewable source of energy?

a. club moss

b. horsetail

c. sphagnum moss

d. fern

How did the development of a vascular system contribute to the increase in size of plants?
See all solutions

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