Which step of photosynthesis can occur during the presence or absence of light?

1. One sustainable way farmers can replace nutrients in the soil is:


Question 1


  1. One sustainable way farmers can replace nutrients in the soil is:


by using synthetic fertilizers.
by using herbicides.
through crop rotation.
through salinization.


Question 2


  1. The United States represents less than 5% of the world’s population. However, it is responsible for __________ of the world’s carbon dioxide emissions resulting from burning fossil fuels.


less than 1%
over 50%


Question 3


  1. Which of the following food items is actually a unique set of modified leaves?


Sweet potato
Oat grain
White potato


Question 4


  1. Which step of photosynthesis can occur during the presence or absence of light?


The light reactions
The Calvin cycle


Question 5


  1. What are the reactants of photosynthesis?


Carbon dioxide + glucose
Carbon dioxide + water + light energy
Water + light energy + glucose
Glucose + oxygen


Question 6


  1. Match the following terms to their definition or example.


A. Plants that live for many years
B. Open or close to change the flow of gases and water into or out of the plant cells
C. Plants that produce seeds but no flowers like pine trees
D. Caused by fertilizer runoff from farms
E. Concentration of toxic chemicals at higher levels of a food web
F. Organelle where photosynthesis takes place
G. Pigment that absorbs energy from the sun
H. Most successful group of plants on Earth
I. Planting a single crop over wide acreage
J. Yams
K. Natural fertilizer from partially decomposed waste pr
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