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

Primary productivity is affected by ______.

  1. a. nutrient availability
  2. b. amount of sunlight
  3. c. temperature
  4. d. all of the above

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. In an ecosystem, the trophic level represents the position of an organism in a food chain. The flow of energy through an ecosystem begins with the primary production.


Reasons for the correct statement:

Primary productivity is the rate at which producers capture light energy from sunlight and convert it into chemical energy. The amount of energy captured by all procedures is the primary production of the ecosystem. Factors that influence the rate of photosynthesis affect the primary productivity. The primary production of an ecosystem is affected as per the difference in the availability of nutrient and often varies as per temperature balance.

Option d. is given as “all of the above.

Primary productivity is affected by nutrient availability, amount of sunlight, and temperature, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “nutrient availability”. The primary productivity of an ecosystem depends on habitats and often varies seasonally. Primary productivity is affected by the availability of nutrients, as well as the amount of sunlight and temperature...

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