Life Science: From Bacteria to Plants, Book B

Chapter 5: Plant Processes

Standardized Test Practice

1.
In which layer of a leaf is most of a plant's food made?

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A)lower epidermis
B)spongy
C)upper epidermis
D)palisade
2.
When are stomata usually open?
A)at night
B)during the day
C)when a plant is losing too much water
D)when food making slows down
3.
The plant in the diagram is showing a positive tropism for

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A)gravity.
B)touch.
C)light.
D)water.
4.
The plant in the diagram has auxin concentrated

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A)on the side facing the light.
B)in its roots.
C)on its tip.
D)on the shaded side.
5.
A stem growing up a chain-link fence or a trellis is growing in response to
A)gravity.
B)touch.
C)light.
D)water.
6.
Which plant hormone stimulates ripening?
A)abscisic acid
B)cytokinin
C)ethylene
D)gibberellin
7.
In which cell structure does photosynthesis take place?
A)cell wall
B)mitochondrion
C)vacuole
D)chloroplast
8.
Which of these substances is produced during photosynthesis?
A)cabon dioxide
B)chlorophyll
C)oxygen
D)water
9.
What is the structure indicated by the letter F? [432_STP Questions_ta2]
A)upper epidermis
B)cuticle
C)lower epidermis
D)stoma
10.
Long-day plants usually flower
A)in late fall.
B)in mid-winter.
C)in early summer.
D)any time there is more than 12 hours of darkness.
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