Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 25: Q. 14 (page 667)

The chromosome complement in a moss protonema is:

a. 1n

b. 2n

c. 3n

d. varies with the size of the protonema

Short Answer

Expert verified

Option (a) 1n

Step by step solution

01

Step 1. Introduction 

Chromosome compliment: It can be defined as the total number of chromosomes present in a species of any living organism.

Protonema: It is the prime thalloid stage of the gametophyte. It is filamentous and affluent in chlorophyll.

02

Step 2. Explanation for correct option.

  • The protonema is a structure which is extensively found in moss.
  • The spores present in moss are of haploid nature i.e., contains only half number of chromosomes.

Hence, 1n is the ploidy of a moss protonema.

03

Step 3. Explanation for incorrect answer.

  • Since, the spore of a moss is haploid in nature and not diploid so 2n is an incorrect ploidy.
  • 3n ploidy is invalid as no living organism consist such number of chromosomes.
  • The size of any living organism does not affect its chromosome ploidy

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Which of the following structures is not found in bryophytes?

a. a cellulose cell wall

b. chloroplast

c. sporangium

d. root

What characteristic of Charales would enable them to survive a dry spell?

a. sperm with flagella

b. phragmoplasts

c. sporopollenin

d. chlorophyll a

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

a. green algae

b. red algae

c. brown algae

d. angiosperms

Bryophytes form a monophyletic group that transitions between green algae and vascular plants. Describe atleast one similarity and one difference between bryophyte reproduction and green algae reproduction.

Stomata appear in which group of plants?

a. Charales

b. liverworts

c. hornworts

d. mosses
See all solutions

Recommended explanations on Biology Textbooks

Biological Molecules

Read Explanation

Ecology

Read Explanation

Cells

Read Explanation

Substance Exchange

Read Explanation

Cell Cycle

Read Explanation

Biological Organisms

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free