Stomata and Guard Cells

Leaves will have the highest number of stomata when

• temperatures are unusually high and CO2 levels are also high

• temperatures are low and CO2 levels are also low

• temps are high and CO2 levels are low

• temps are low and CO2 levels are high

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

During times of higher temperatures

• leaves will have more stomata

• leaves will have fewer stomata

• there will not be any changes in the number of stomata

• there will be no stomata at all

Tags

NGSS.MS-LS1-5

The tiny pores present in the leaves of the plants for exchange of gases are called _____(Gases exchange ke liye plants mein kuchh tiny pores hote hein, unhe Kya khte Hein)

• Stomata

• Tracheae

• Chloroplast

• Spiracles

• Pores

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?

• Chloroplasts

• Waxy layer

• Guard cells

• Palisade layer

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

• waxy layer

• phloem

• stomata

• guard cells

Tags

NGSS.MS-LS1-6

___ open and close the stomata.

• Guard cells

• Xylem

• Roots

• Phloem

Which of the following is pointing to the "guard cell"?

• B

• C

• D

• E

Tags

NGSS.MS-LS1-2

Which of the following structures allows for gas exchange between a leaf and the atmosphere?

• Cuticle

• Phloem

• Stomata

• Xylem

What is the primary function of stomata in plant leaves?

• Gas exchange

• Water absorption

• Nutrient transport

• Photosynthesis

Tags

NGSS.MS-LS1-6

Which cells are responsible for opening and closing the stomata?

• Guard cells

• Mesophyll cells

• Epidermal cells

• Palisade cells