Plant Processes
Practice Test
1.
Positive phototropism can cause plant leaves to change growing patterns and __________.
a.
become day-neutral plants
b.
grow towards a touch stimulus
c.
stop making new cells
d.
grow towards a light source
Hint
2.
Chlorophyll and other pigments are involved in __________.
a.
light-dependent reactions
b.
respiration
c.
light-independent reactions
d.
gravitropism
Hint
3.
A plant's response to touch is called __________.
a.
thigmotropism
b.
photoperiodism
c.
light-independence
d.
respiration
Hint
4.
Carbon dioxide enters a plant through its __________.
a.
leaves
b.
trunk
c.
flowers
d.
roots
Hint
5.
Small openings on the epidermis of plant leaves are called __________.
a.
waste
b.
stomata
c.
vapor
d.
bark
Hint
6.
The outer layer of a leaf is called the __________.
a.
trunk
b.
epidermis
c.
seed
d.
muscle
Hint
7.
Plant photosynthesis helps humans because __________.
a.
the process adds nitrogen to the atmosphere
b.
the process adds oxygen to the atmosphere
c.
the process adds carbon dioxide to the atmosphere
d.
the process removes oxygen from the atmosphere
Hint
8.
Spinach is a plant that needs short nights to flower. It is a __________ plant.
a.
long-day
b.
nonvascular
c.
day-neutral
d.
short-day
Hint
9.
You are traveling in Costa Rica and see many lettuce plants growing in fields. You conclude that lettuce is __________.
a.
a long-day plant
b.
a short-day plant
c.
a nonvascular plant
d.
a perennial plant
Hint
10.
A geranium gets the water needed to survive through its __________.
a.
roots
b.
chlorophyll
c.
stomata
d.
leaves
Hint
11.
__________ is the process that breaks down food molecules and releases energy.
a.
Photoperiodism
b.
Meiosis
c.
Respiration
d.
Photosynthesis
Hint
12.
Aerobic respiration takes place in which organelle?
a.
nucleus
b.
mitochondrion
c.
cell wall
d.
endoplasmic reticulum
Hint
13.
A vine growing up the wall outside your classroom is an example of a response to __________.
a.
positive phototropism
b.
negative gravitropism
c.
thigmotropism
d.
aerobic respiration
Hint
14.
When a plant is losing too much water, it can __________ its stomata.
a.
dissolve
b.
multiply
c.
close
d.
open
Hint
15.
The reason most plant leaves look green is because of __________ in their cells.
a.
sugar
b.
oxygen
c.
water
d.
chloroplasts
Hint
16.
The hormone that promotes faster cell division in plants is called __________.
a.
cytokinins
b.
stomata
c.
chloroplasts
d.
tropism
Hint
17.
You duck your head when a baseball is thrown toward your face. You are responding to __________.
a.
hormones
b.
pigments
c.
an internal stimulus
d.
an external stimulus
Hint
18.
Carbon dioxide is involved in __________.
a.
photoperiods
b.
light-independent reactions
c.
thigmotropism
d.
light-dependent reactions
Hint
19.
Auxin is a hormone that causes plants to respond to __________.
a.
negative phototropism
b.
positive phototropism
c.
positive gravitropism
d.
negative gravitropism
Hint
20.
You are outside admiring the flowers on a rose bush. Looking at the green leaves, the green light is __________ from chlorophyll.
a.
dissolved
b.
reflected
c.
mutated
d.
filtered
Hint
