Life Science: From Bacteria to Plants, Book B

Chapter 5: Plant Processes

Plant Processes

1.
The reason most plant leaves look green is because of __________ in their cells.
A)chloroplasts
B)oxygen
C)water
D)sugar
2.
Small openings on the epidermis of plant leaves are called __________.
A)bark
B)stomata
C)vapor
D)waste
3.
The hormone that helps plants conserve water is __________.
A)antacid
B)hydrochloric acid
C)ascorbic acid
D)abscisic acid
4.
Spinach is a plant that needs short nights to flower. It is a __________ plant.
A)short-day
B)long-day
C)day-neutral
D)nonvascular
5.
Which of these is NOT a hormone that affects plant growth?
A)mitochondrion
B)cytokinins
C)auxin
D)ethylene
6.
When a plant is losing too much water, it can __________ its stomata.
A)close
B)multiply
C)dissolve
D)open
7.
Plant photosynthesis helps humans because __________.
A)the process adds oxygen to the atmosphere
B)the process adds carbon dioxide to the atmosphere
C)the process adds nitrogen to the atmosphere
D)the process removes oxygen from the atmosphere
8.
Carbon dioxide is involved in __________.
A)thigmotropism
B)light-independent reactions
C)photoperiods
D)light-dependent reactions
9.
Carbon dioxide enters a plant through its __________.
A)trunk
B)leaves
C)flowers
D)roots
10.
You are traveling in Costa Rica and see many lettuce plants growing in fields. You conclude that lettuce is __________.
A)a nonvascular plant
B)a short-day plant
C)a perennial plant
D)a long-day plant
11.
You duck your head when a baseball is thrown toward your face. You are responding to __________.
A)pigments
B)hormones
C)an internal stimulus
D)an external stimulus
12.
Positive phototropism can cause plant leaves to change growing patterns and __________.
A)grow towards a light source
B)stop making new cells
C)become day-neutral plants
D)grow towards a touch stimulus
13.
The process where light energy is trapped in a plant's chlorophyll and produces sugars is called __________.
A)respiration
B)mitosis
C)photosynthesis
D)acceleration
14.
Chlorophyll and other pigments are involved in __________.
A)light-independent reactions
B)light-dependent reactions
C)gravitropism
D)respiration
15.
Photosynthesis is a plant process used to __________.
A)release energy
B)store energy
C)copy chromosomes
D)produce offspring
16.
__________ is the process that breaks down food molecules and releases energy.
A)Meiosis
B)Respiration
C)Photoperiodism
D)Photosynthesis
17.
A plant's response to touch is called __________.
A)thigmotropism
B)respiration
C)light-independence
D)photoperiodism
18.
A geranium gets the water needed to survive through its __________.
A)stomata
B)chlorophyll
C)roots
D)leaves
19.
The outer layer of a leaf is called the __________.
A)muscle
B)epidermis
C)trunk
D)seed
20.
Auxin is a hormone that causes plants to respond to __________.
A)negative gravitropism
B)positive gravitropism
C)positive phototropism
D)negative phototropism
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