TAKS logo

Online TAKS Practice

Prentice Hall Biology

Chapter 25: Plant Responses and Adaptations

TAKS Practice Test

Click on the button next to the response that best answers the question. For best results, review Prentice Hall Biology, Chapter 25.

You may take the test as many times as you like. When you are happy with your results, you may e-mail your results to your teacher. Please obtain your teacher's permission before e-mailing.

Your First Name Only:
Your Class Period:

(TAKS 3, Bio TEKS 12C.3)
1. Parasitic and carnivorous plants have special adaptations for
A reducing photosynthesis.
B increasing photosynthesis.
C reducing competition.
D obtaining nutrients.

(TAKS 3, Bio TEKS 12C.3)
2. Spongy stems with large internal air spaces are common in plants that are adapted to live in
F forests.
G deserts.
H water.
J fields.

(TAKS 3, Bio TEKS 13B.5)
3. To stimulate the growth of lateral buds, flower growers can use hormones called
A auxins.
B gibberellins.
C cytokinins.
D ethylene.

(TAKS 3, Bio TEKS 11B.2)
4. In deciduous plants, decreasing temperatures stimulate all of the following EXCEPT
F transport from leaves to roots.
G a decline in photosynthesis.
H growth of flowers.
J sealing off of leaves.

(TAKS 3, Bio TEKS 13B.5)
5. Which of the following is useful for increasing the sizes of fruits and flowers?
A cytokinin
B ethylene
C auxin
D gibberellin

(TAKS 3, Bio TEKS 12B.1)
6. Some important plant defenses against attack by insects include the
F use of chemical substances.
G development of small, thick leaves.
H development of deep root systems.
J development of long, thin branches.

(TAKS 3, Bio TEKS 11B.2)
7. Gravitropism and phototropism are controlled by
A photosynthesis.
B hormones.
C enzymes.
D nutrients.

(TAKS 3, Bio TEKS 12C.3)
8. Plant adaptations for survival in desert climates include all of the following EXCEPT
F extensive root systems.
G tall, narrow growth forms.
H reduced size of leaves.
J thick, water-storing stems.

(TAKS 3, Bio TEKS 11B.2)
9. Today, scientists know that photoperiodism in plants depends primarily on
A hours of darkness.
B hours of light.
C temperature.
D amount of phytochromes.

10. A pure substance that consists entirely of one type of atom is the definition of a(an)
F compound.
G element.
H isotope.
J molecule.