Year 7 - Chapter 1

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

The water needed for photosynthesis comes into the leaves through the

• upper epidermis
• stomata
• guard cells
• xylem cells

Tags

NGSS.MS-LS1-6

Most of the chloroplast cells are found in the

• upper epidermis

• palisade layer

• lower epidermis

• stomata

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

• upper epidermis
• phloem
• stomata
• guard cells

Tags

NGSS.MS-LS1-6

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 

Plants need to take in oxygen gas for respiration

• only at night 
• only during the day
• both during the day & the night

What is chlorophyll's main function?

• to make the plant a vegetable
• to blend into their environment
• to capture energy from sunlight for photosynthesis
• to help prevent water loss

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Plants need ________ as a reactant for photosynthesis.

• oxygen
• soil
• carbon dioxide
• sugar

Tags

NGSS.MS-LS1-6

What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water

Tags

NGSS.MS-LS1-6

What is the biggest bone in your body?

• fibula
• humerus
• pelvis
• femur