Question 1

Which of the following is NOT a basic requirement for plant survival?

Accepted Answer

Sugar

Question 2

Which plant tissue is primarily responsible for transporting water and dissolved minerals from roots to leaves?

Accepted Answer

Xylem

Question 3

A botanist observes that a plant's stomata are open during the day and closed at night. What is the main function of this behavior?

Accepted Answer

To maximize CO$$_2$$ uptake for photosynthesis during the day

Question 4

Which of the following statements about the proton pump in plant cells is INCORRECT?

Accepted Answer

It transports protons down their gradient

Question 5

Which of the following is NOT a function of the plant hormone auxin?

Accepted Answer

Inhibiting seed germination

Question 6

A plant cell is placed in a solution with a lower water potential than the cell. What will most likely happen?

Accepted Answer

Water will exit the cell

Question 7

Which of the following best describes the difference between diffusion and active transport?

Accepted Answer

Diffusion moves things down a gradient; active transport moves things up a gradient

Question 8

Which statement about secondary growth in woody plants is correct?

Accepted Answer

It results from the activity of the vascular cambium

Question 9

Which of the following is NOT a modified epidermal cell?

Accepted Answer

Collenchyma

Question 10

Which of the following statements about nitrogen-fixing bacteria is TRUE?

Accepted Answer

They convert atmospheric N$$_2$$ into ammonia

Question 11

Which of the following is NOT a function of the endodermis in plant roots?

Accepted Answer

Transporting sugars to the leaves

Question 12

Which of the following is a cross section of a monocot stem?

Accepted Answer

Vascular bundles scattered throughout the ground tissue

Question 13

Which of the following is NOT a micronutrient for plants?

Accepted Answer

Calcium

Question 14

Which of the following statements about transpiration is FALSE?

Accepted Answer

It occurs mainly at night

Question 15

Which of the following is NOT a mechanism plants use to defend against herbivory?

Accepted Answer

Photosynthesis

Question 16

Which of the following statements about phototropism is TRUE?

Accepted Answer

It is the growth of a plant toward light

Question 17

Which of the following best explains why water moves up through the xylem in tall trees?

Accepted Answer

Cohesion and adhesion of water molecules

Question 18

Which of the following is NOT a function of the Casparian strip in roots?

Accepted Answer

Allowing free movement of water into the xylem

Question 19

Which of the following is a correct statement about the role of potassium ions (K$$^+) in $$guard cells?

Accepted Answer

K$$^+$$ influx causes water to enter guard cells, opening the stomata

Question 20

Which of the following is NOT a correct statement about the role of phytochrome in plants?

Accepted Answer

It is responsible for water transport in the xylem

Plant Structure, Growth, and Responses: Study Guide and Practice Questions

Study Guide - Practice Questions