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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Chemoautotrophic bacteria and archaea are the main primary producers for food webs ______.

  1. a. in mangrove wetlands
  2. b. at seamounts
  3. c. on coral reefs
  4. d. at hydrothermal vents

Summary Introduction

Introduction: An ecosystem is an open flow system that requires ongoing inputs of energy and nutrients. The primary producers use energy from sunlight to build organic compounds. They convert the solar energy to chemical energy and this energy moves from one tropic level to another.

Explanation

Reason for the correct answer:

At hydrothermal vents, hot water is mineral-rich water. These minerals are settled out in this water when mixed with cold sea water. Chemoautotrophic bacteria and archaea remove electrons from minerals and obtain energy from oxidation of inorganic chemical compounds in the deep ocean. These organisms also form the base of the food web. Therefore, option d. is correct.

Reason for the incorrect answer:

Option a. is given as “in mangrove wetlands”. Mangrove wetlands are characterized by small salt-tolerant woody plants. Therefore, option a...

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