7.5A Photosynthesis

In paragraph 1 of this passage, which clues help you figure out the meaning of the word vital?

• “Need them to survive”

• “Chemical change called photosynthesis”

• “Captured from the Sun”

Which is the best summary of the selection?

• Photosynthesis is a vital part of the food chain.

• Leaves conduct photosynthesis, which converts energy from the Sun into chemical energy that is useful and important to humans.

• Radiant energy is the most important part of photosynthesis. It is energy from the Sun, which leaves are thankful for.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The above flow chart traces the energy transformations for the process described in paragraph 3. Which of the choices below in the order of (1), (2), (3) will correctly fill the blanks in the chart?

• Heat, Chemical, Light

• Heat, Light, Chemical

• Light, Chemical, Heat

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How is ethanol made?

• By fermenting sugars and starches

• By composting grass cuttings and dinner table scraps

• By boiling water and corn oil

Tags

NGSS.MS-PS1-3

What is the main point of paragraph 2?

• how photosynthesis affects humans’ food supply

• how carbohydrates cause weight gain in humans

• how humans and other animals use radiant energy from the Sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3