Plant Structure and Functions

Chapter 2 Review

Question 1

Leaves that grow in clusters are called

a. lobed leaves.b. simple leaves.c. needles.d. compound leaves.

Question 2

Water and minerals flow UP from the roots through the

a. cortex.b. cambium.c. phloem.d. xylem.

Question 3

As it grows into the soil the root tip is protected by a thin covering of cells called the

a. cortex.b. cambium.c. root cap.d. root canal.

Question 4

When water vapor evaporates from the leaves, and more water moves up through the plant to replace the lost water, it is called

a. circulation.b. transportation.c. respiration.d. transpiration.

Question 5

The outermost layer of a root, stem, or leaf is called the

a. epidermis.b. cambium.c. cortex.d. cuticle.

Question 6

This plant has roots we use for food.

a. lettuceb. asparagusc. sweet potatoesd. cabbage

Question 7

If a plant bends toward a stimulus, its change is called a positive

a. reaction.b. response.c. reinforcement.d. tropism.

Question 8

Some plants, such as squash and grape plants, show a response to

a. touch.b. words.c. wind.d. time.

Question 9

Plants that bloom when there is more darkness and less daylight are called

a. short-day plants.b. long-day plants.c. moonflowers.d. night blooming plants.

Question 10

Trees in the forest have more leaves on the top in order to get more

a. water.b. carbon-dioxide.c. sun light.d. space.

Question 11

A layer of roots and stems that stores food is the

a. cortex.b. cambium.c. phloem.d. xylem.

Question 12

A layer that separates the xylem from the phloem is called the

a. epidermis.b. cortex.c. cuticle.d. cambium.

Question 13

The food-making structure inside leaf cells are

a. chloroplasts.b. vacuoles.c. stomata.d. petioles.

Question 14

In a plant food flows downward through the

a. cambium.b. phloem.c. xylem.d. cortex.

Question 15

A plant requires all of the following to make food except

a. minerals.b. pollen.c. water.d. carbon dioxide.

Question 16

Anything in the environment that produces a response is called a(n)

a. adaptation.b. factor.c. stimulus.d. tropism.

Question 17

A plant that grows toward the pull of gravity shows

a. geotropism.b. phototropism.c. hydrotropism.d. gravitropism.

Question 18

A change in form or function that helps an organism survive in its environment is called a(n)

a. response.b. adaptation.c. variation.d. adjustment.

Question 19

Plant roots that grow toward the water are showing

a. thirst.b. water hydration.c. hydrotropism.d. water tolerance.

Question 20

Plants that grow when there is much more sunlight than darkness are called

a. morning glories.b. sunflowers.

c. short-day plants.d. long-day plants.

Question 21

A desert plant such as a cactus has adaptations for

a. not needing water.b. catching food with its needles.c. storing and saving water.d. blooming in the darkness.

Question 22

Roots help a plant survive by doing all of the following except

a. holding them in the ground.b. storing the plants food.c. providing support.d.

collecting water and minerals from the soil.

Question 23

Each is a part of a plant’s transportation system in the stem except

a. epidermis.b. cambium.c. phloem.d. xylem.

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