U3C4: Photosynthesis

Concept 4: Photosynthesis

Unit 3: Energy Flow

Multiple Choice

What is the main purpose of photosynthesis?

• To make food

• To create energy

• To release oxygen

• To absorb sunlight

Multiple Choice

What are the 2 products of photosynthesis? The products are the things made in the process of photosynthesis.

• water, sunlight

• glucose, carbon dioxide

• oxygen, glucose

• sunlight, oxygen

Multiple Choice

What are the 3 reactants of photosynthesis? The reactants are the things needed for photosynthesis to occur.

• oxygen, glucose, sunlight

• sunlight, oxygen, water

• water, oxygen, carbon dioxide

• carbon dioxide, sunlight, water

Multiple Choice

Where do trees get their mass from?

• Water

• Air

• Soil

• Sunlight

Label the image as you watch the following video...

• Be as specific as you can

• They are not in order, so be on your toes!

Open Ended

What did you label #8 & #13?

(Hint - They should be the same thing!)

Check your work with this diagram!

Multiple Choice

The role of the guard cell is to

• help control the temperature of the plant
• control how much water enters the leaf
• control how much glucose is stored
• control the movement of water vapour & gases 

Multiple Choice

The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

• upper epidermis
• phloem
• stomata
• guard cells

Multiple Choice

Most of the chloroplast cells are found in the

• upper epidermis
• pallisade mesophyll layer
• lower epidermis
• stomata

Multiple Choice

The leaf has a shiny, waxy cuticle around it to

• increase the rate of photosynthesis
• attract more light
• control water loss
• stop carbon dioxide and oxygen gases escaping

Caption this graph:

Based on our activity from yesterday, write a 'smart-sounding' caption for this graph.

*There is one small difference between this one and the graph from yesterday...

Pick out two different colored pencils

One color will represent the light dependent reactions, the other will represent the light independent reactions.