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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