Module 1 Intro

1.5. Page 3

Module 1—Energy Flow and the Cycling of Matter

 

Watch and Listen

 

A Closer Look at Producers and Photosynthesis

 

Photosynthesis provides organisms with the energy they need to stay alive. What happens if limiting factors such as low light intensity, low carbon dioxide levels, or extreme temperatures inhibit the rate at which photosynthesis can occur? Do plants start dying? What happens to oxygen levels, a by-product of photosynthesis? How would inhibited photosynthesis affect consumers that depend on plants for energy and for the oxygen needed for the process of cellular respiration?

 

Watch a video to better understand how the various limiting factors of photosynthesis were discovered. The limiting factors mentioned in this lesson and in the video will be examined further in the photosynthesis lab that you’ll complete later in Lesson 1.

 

Try This

 

TR 1. Scientific Inquiry

 

What series of hypotheses and observations and discoveries led scientists to the conclusion that carbon dioxide and oxygen were involved in what is now know as photosynthesis?

 

Assignment

 

Please note that you will complete two Try This questions in the Assignment.