The Reaction of Photosynthesis

Photosynthesis

How plants make food

Multiple Choice

What is the source of energy for plants to make food?

• other plants

• the sun

• the moon

• animals

Multiple Select

What do plants need to make food?

• water & oxygen

• water & carbon dioxide

• oxygen & dirt

• carbon dioxide & oxygen

REACTANTS of PHOTOSYNTHESIS

Plants need WATER and CARBON DIOXIDE to make food.

Multiple Choice

How do plants get the water they need to make food?

• roots bring water in from the soil

• the leaves bring water in from the air

• the flowers collect water

• seeds spread out to find water

Multiple Choice

What is the food that plants make called?

• glucose

• oxygen

• leaves

• carbon dioxide

Multiple Choice

Glucose is a kind of --

• meat

• air

• sugar

• leaf

Multiple Choice

Which shows the REACTANTS for photosynthesis?

• oxygen & carbon dioxide

• dirt & oxygen

• water & carbon dioxide

• carbon dioxide & leaves

Multiple Choice

How many molecules of oxygen are produced when a molecule of glucose is created?

• 1

• 100

• 6

• none

Multiple Choice

How many molecules of water does a plant need to make one molecule of glucose?

• 1,000

• 6

• 10

• 5

PRODUCTS of PHOTOSYNTHESIS

Plants PRODUCE glucose (sugar) and oxygen

Multiple Choice

Which gas do plants release during photosynthesis?

• oxygen

• carbon

• helium

• carbon dioxide

Multiple Choice

What are the PRODUCTS of photosynthesis?

• oxygen & glucose

• carbon dioxide & oxygen

• glucose & carbon dioxide

• glucose only

Multiple Choice

How many molecules of carbon dioxide does a plant need to make one molecule of glucose?

• 6

• 55

• 100

• 1

Multiple Choice

What is the correct equation for photosynthesis?

• carbon dioxide + oxygen + sunlight = glucose + water

• water + oxygen = sunlight + carbon dioxide + soil

• glucose + oxygen = sunlight + carbon dioxide + water

• water + carbon dioxide + sunlight = glucose + oxygen

Multiple Choice

How are plants beneficial to animals?

• they eat harmful animals

• they provide oxygen & food for animals

• they provide carbon dioxide for animals

• they produce glucose for animals to eat

Multiple Choice

A popular "pet," in Japan is a plant called marimo, or moss balls. They sink during the night and they float during the day. Based on what you know about plants, why does this happen?

• they become lighter during the day and gain weight at night

• they get larger at night, which causes them to sink

• they turn green at night, and green makes them weigh more

• they perform photosynthesis during the day, which releases bubbles of oxygen, which allows them to float

Multiple Choice

What is the chemical in plants' leaves that performs photosynthesis and causes plants to be a green color?

• stomata

• chlorophyll

• carbon dioxide

• glucose

Multiple Choice

Why would the mouse in jar A have trouble breathing?

• it doesn't have oxygen

• it doesn't have carbon dioxide

• it doesn't have water

• it doesn't have sunlight

Multiple Choice

What needs to be placed where the X is in the formula?

• oxygen

• glucose

• carbon

• sunlight