Plants Unit Test

Ground tissue is found in a plant’s

• roots and stems only.

• roots, stems, and leaves.

• stems only.

• stems and leaves only.

One of the three main functions of stems is to

• carry water and nutrients between roots and leaves.

• store water.

• carry out photosynthesis.

• store carbohydrates.

Tags

NGSS.MS-LS2-3

Many cacti, such as saguaros and barrel cacti, have large stems and no leaves. What function of leaves is taken on by the stems of such cacti?

• They produce food by photosynthesis.

• They transport materials throughout the plant.

• They store excess water.

• They absorb water and nutrients from the soil.

Oxygen and carbon dioxide move in and out of a leaf through the

• phloem.

• palisade mesophyll.

• stomata.

• guard cells.

In many plants, stomata are found only on the lower surface of the leaf. The most likely explanation for this fact is that

• photosynthesis only occurs in the spongy mesophyll near the bottom of the leaf.

• stomata are closer to vascular bundles that bring water into the leaf.

• gravity plays a role in gas exchange.

• water loss would be less on the shaded lower surface than in direct sun.

Tags

NGSS.MS-LS1-6

In Figure 24–2, which fruit or fruits would you expect to be dispersed by animals?

• neither A nor B

• both A and B

• only B

• only A

A period of dormancy can allow seeds to germinate

• under ideal conditions.

• under cold conditions.

• without water.

• in extreme temperatures.

Tags

NGSS.MS-LS2-1

In most plants, which organs are adapted to capture sunlight for photosynthesis?

• roots

• stems

• leaves

• flowers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If some of the xylem of a young oak tree were destroyed, it would most likely interfere with the tree’s ability to

• conduct sugars to the roots.

• conduct water to the leaves.

• absorb nutrients from the soil.

• absorb sunlight.

Tags

NGSS.MS-LS2-1

Vascular tissue in plants consists of

• xylem and phloem.

• parenchyma and collenchyma.

• epidermis.

• meristems.