Photosynthesis

Question 1

Which describes the role of oxygen in photosynthesis?

Revolt · Accepted Answer

It is a product, so it is released by the plant.

Question 2

Which best describes the reactants and products of photosynthesis?

Revolt · Accepted Answer

Reactants are taken in from the environment by the plant, and products are formed inside the plant.

Question 3

Sammy is taking notes to study for a test. He wrote out the steps that involve hydrogen during photosynthesis. The steps are shown, but they are not in the correct order.1 - Water is broken down into oxygen and hydrogen.2 - Glucose is broken down to be used by plants. 3 - Hydrogen combines with carbon dioxide to form glucose.4 - Hydrogen enters the plant as part of water.

Revolt · Accepted Answer

4, 1, 3, 2

Question 4

Where in an equation for photosynthesis does carbon dioxide belong?

Revolt · Accepted Answer

on the left side, because it is a reactant

Question 5

Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?

Revolt · Accepted Answer

Julian is correct because chlorophyll is neither used up nor formed in the chemical reaction of photosynthesis.

Question 6

Which substance is used by plants as a source of food?

Revolt · Accepted Answer

glucose

Question 7

Where in an equation for photosynthesis does glucose belong?

Revolt · Accepted Answer

on the right, because it is a product

Question 8

A scientist follows this procedure to test whether plants have been performing photosynthesis.Place Plant X in a dark closet and Plant Y on a sunny windowsill. Wait several days, then remove a leaf from each plant.Boil leaves in alcohol to remove the chlorophyll. Add a chemical indicator that detects sugars. (Dark purple = sugars are present; dark orange = sugars are not present)

Revolt · Accepted Answer

Plant X: dark orangePlant Y: dark purple

Question 9

The diagram illustrates photosynthesis.

Revolt · Accepted Answer

Oxygen is released into the atmosphere through stomata.

Question 10

Which is the energy source used to fuel photosynthesis?

Revolt · Accepted Answer

sunlight

Photosynthesis Answers

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