Leaf structure and function igcse Biology

What is the name of the clear layer of cells (H) on top of the leaf?

• Cuticle

• Air space

• Guard cell

• Upper epidermis

Tags

NGSS.MS-LS1-2

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 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 

Tags

NGSS.MS-LS1-2

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

• Palisade cells

• Guard cell

• Spongy layer

• Lower epidermis

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

carries water and minerals from roots to other parts of the plant

• xylem 
• phloem
• stoma
• guard cell

Which organelle from the plant cell is primarily responsible for converting sunlight to energy?

• Mitochondria
• Nucleus
• Vacuole
• Chloroplast

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

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

Carbon dioxide enters plant leaves through the __________.

• stomata
• chloroplasts
• xylem
• cuticle

Tags

NGSS.MS-LS1-6

Which is NOT a reason why we should care about photosynthesis?

• It creates food for the plants, which then feed animals.
• Without it, we wouldn't be able to breathe oxygen.
• It uses up greenhouse gas CO₂ in the atmosphere.
• It controls the water cycle.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is letter "D" pointing to?

• upper epidermis

• palisade mesophyll

• spongy mesophyll

• bundle sheath

Tags

NGSS.MS-LS1-2