Science Q3M2

Plants use photosynthesis to meet their survival needs by –

• using light energy to make food (sugar)

• releasing carbon dioxide into the atmosphere

• breaking down nutrients from the soil

• capturing oxygen from water molecules

An incomplete diagram of the process of photosynthesis is provided. What is the missing component that correctly replaces the question mark to complete the diagram?

• Soil nutrients

• Water

• Thermal Energy

• Glucose

A test tube is filled with water and a green plant called elodea. When the plant is exposed to sunlight, it begins to produce bubbles. Which of the following is the most likely conclusion for the identity of the gas in the bubbles?

• Carbon Dioxide

• Oxygen

• Nitrogen

• Hydrogen

Which of the following provides the energy needed for photosynthesis?

• water

• sunlight

• plants

• atoms

How is this tree meeting its energy needs? Use evidence from the picture to make your claim.

• The tree has leaves, therefore it is using photosynthesis to meets its energy needs.

• The tree has no leaves, therefore it is using energy directly from the sun to meet its energy needs.

• The tree has no leaves, therefore it is using energy found in the soil to meet its energy needs.

• The tree has no leaves, therefore it is using energy stored in its body to meet its energy needs.

What are water and carbon dioxide converted into by the end of photosynthesis?

• air and sunlight

• water and air

• sugar and water

• sugar and oxygen

What part of the plant helps to get most of the light?

• fruit

• stem

• leaves

• flowers

Tyler learned that plants survive through a process called photosynthesis. Which substance do plants produce during photosynthesis?

• Nitrogen

• Hydrogen

• Glucose

• Minerals

Which gas is given off by a plant during photosynthesis?

• Hydrogen

• Carbon dioxide

• Nitrogen

• Oxygen

In which part of a tree does photosynthesis MOST likely take place?

• bark

• roots

• trunk

• leaves