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Prentice Hall Biology

Chapter 25: Plant Responses and Adaptations

TAKS Practice Test

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(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.


(TAKS 4, IPC TEKS 7E)
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.