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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

Solutions

Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 20, Problem 10SQ
Textbook Problem
41 views

Formation of a(n) ___ allows some soil bacteria to survive adverse conditions.

  1. a. pilus
  2. b. nucleoid
  3. c. endospore
  4. d. plasmid

Summary Introduction

Introduction: An endospore is a structure produced by some bacteria (especially soil bacterium) that are extremely hard, inactive, and non-reproductive in nature. Endosperms are produced in order to survive in the adverse conditions and overcome the stress due to environmental changes.

Explanation of Solution

Reason for correct answer:

Endospore-producing bacteria are called as sporulating bacteria. The endospore consists of a dried up or reduced form of the bacteria that is essential for the primary growth of bacteria. Their tough coat provides them a wide range of protection and resistance against many adverse conditions that originally kill their vegetative form.

Option c. is given as “endospore”. The endosperms produced by some bacteria help them to survive in unfavorable and extreme conditions.

Hence, the correct answer is option c.

Reason for incorrect answers:

Option a. is given as “pilus”.

A pilus is an attachment found in many bacterial cell walls that has a hair-like appearance. Bacteria consist of pilus for transfer of genetic material (plasmids) between cells—bacterial conjugation...

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