Leaf Lab

Identify structure 7 in the diagram.

• Guard cell

• Phloem

• Stomata

• Upper epidermis

Tags

NGSS.HS-LS1-5

Recall the main role of the specialised plant cell below.

Guard cells

• Absorb water/mineral

• Open/close stomata

• Photosynthesis

Photosynthesis takes place in which organelle?

• chloroplast

• mitochondria

• cytoplasm

• nucleus

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

The diagram shows a section through a leaf.

Which arrow shows the direction of diffusion of carbon dioxide on a sunny day?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which substances are used for photosynthesis?

• carbon dioxide and glucose

• carbon dioxide and water

• glucose and oxygen

• glucose and water

Tags

NGSS.MS-LS1-6

The graph shows the concentration of oxygen in the air spaces of a green leaf of a plant during a

12-hour period.

Which statement about carbon dioxide in the air spaces during time X is correct?

• Carbon dioxide is being produced because the rate of photosynthesis is greater than the rate of respiration.

• Carbon dioxide is being produced because the rate of respiration is greater than the rate of photosynthesis.

• Carbon dioxide is being used because the rate of photosynthesis is greater than the rate of respiration.

• Carbon dioxide is being used because the rate of respiration is greater than the rate of photosynthesis.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Four test-tubes are set up as shown.

Which test-tube contains the most carbon dioxide after one hour?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

In which organelle (part of the cell) does photosynthesis take place?

• mitochondria
• chloroplast
• nucleus
• cell membrane

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the solute you are using in this lab?

• Sodium Chloride
• Sodium Bicarbonate
• Carbon Dioxide
• Oxygen

What is the independent variable?

• Amount of solute
• Type of leaf
• Amount of light
• Oxygen production

Tags

NGSS.HS-LS1-5