Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

In most ecosystems, the primary producers use energy from _______ to build organic compounds.

  1. a. sunlight
  2. b. heat
  3. c. breakdown of wastes and remains
  4. d. breakdown of inorganic substances in the habitat

Summary Introduction

Concept introduction: An ecosystem is an arrangement of organisms and their physical environment, all interacting through a one way flow of energy with respect to the cycling of nutrients. It is an open flow system that requires ongoing inputs of energy and nutrients.


Reasons for the correct statement:

The ecosystem of earth are remarkable diverse in their characteristics. All ecosystems run on energy captured by primary procedures. The autotrophs, or the self- feeders obtain energy from a nonliving source especially sunlight and use it to build organic compounds from inorganic materials. Plants and phytoplankton are the main producers. Plants and phytoplankton capture energy from the sun and utilize it in photosynthesis to produce sugars from carbon dioxide and water.

Option a. is given as “sunlight”

For nonliving source of energy, generally, sunlight is used by the primary producers as energy source to produce organic compounds, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “heat”...

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