Transport in Plants

The diagram shows a cross-section through a plant stem. Q shows the part that is stained red when the stem is placed in water containing a red dye. What is found at Q?

• A guard cells

• B palisade cells

• C phloem

• D xylem

Tags

NGSS.MS-LS1-2

The graph shows how the rate of transpiration is affected by X. What is X?

• A humidity

• B light intensity

• C soil moisture

• D temperature

Tags

NGSS.MS-LS2-3

In which order does water pass through these structures in a plant?

• A mesophyll → root hair → xylem

• B mesophyll → xylem → root hair

• C root hair → mesophyll → xylem

• D root hair → xylem → mesophyll

Tags

NGSS.MS-LS2-3

Which two substances are transported in the phloem?

• A amino acids and protein

• B amino acids and sucrose

• C protein and starch

• D starch and sucrose

Tags

NGSS.MS-LS2-3

What is a description of transpiration?

• A exchange of gases between the leaf and the atmosphere

• B loss of water vapour from the leaves and stems of a plant

• C movement of water from the roots to the leaves

• D movement of water through the cells of the leaf

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

The diagram shows cells from a storage organ of a flowering plant after they have been stained with iodine solution.

Structures X stain black. What does this show that structures X contain?

• A chlorophyll

• B fat

• C starch

• D sugar

Tags

NGSS.MS-LS1-2

Which statements about plant transpiration are correct?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

A celery stalk is placed in a beaker of blue dye. Once the dye reaches the leaves, the stalk is taken out and cut in half.

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

By which process is water lost from a leaf?

• A active transport

• B diffusion

• C osmosis

• D photosynthesis

Which graph shows most clearly what will happen to the rate of transpiration as humidity increases?

• A

• B

• C

• D