A
B
C
D
E
100
A plant that grows toward the light is showing
a. a positive tropism
b. a negative tropism
c. gravitropism
d. seasonal change
A Positive Tropism
100
What is the name of the structure labeled B?
Stoma
100
Which of the following lists the three structures plants used to reproduce asexually?
a. germination, pollination, and fertilization
b. seeds, sprouts, and leaves
c. plantlets, tubers, and runners
d. chlorophyll, photosynthesis, and transpiration
Plantlets, tubers, and runners
C
100
What is plant growth in response to light
Tropism
100
Plants that bloom when nights are long are called what?
Short-day plants
200
The fruit ripens, and the seeds are dispersed
D
200
The energy that starts the process of photosynthesis comes from what?
Sunlight
200
What is green pigment in plants that captures light energy
Chlorophyll
200
Stomata are important because they
a. begin photosynthesis. b. break down chlorophyll. c. play a role in gas exchange. d. feed the plant.
200
What is the name of the structure labeled C?
Guard Cell
300
Deciduous trees shed their leaves to survive long periods without what?
Rain
300
Each ovule contains a fertilized egg.
B
300
The process in which plants use sunlight, water, and carbon dioxide to make food
Photosynthesis
300
Root tips of most plants grow toward the center of the Earth. This action is a
a. negative phototropism. b. positive phototropism. c. negative gravitropism. d. positive gravitropism.
Positive Gravitropism
300
A plant seed develops from what?
An ovule
400
If the seed sprouts, a new plant will begin to grow.
E
400
Why do leaves turn orange and yellow in fall
The green chlorophyll breaks down
400
A mature plant produces a flower. Fertilization and pollination take place.
A
400
What is the process by which plants cells release energy from food
Cellular Respiration
400
What is the opening in a leaf that allows gases to pass into and out of the leaf
Stoma
500
What is the name of the structure labeled A?
Cuticle
500
What is the inactive state of a seed or plant part
Dormant
500
What is the sugar produced during photosynthesis
Glucose
500
The seeds of some plants are protected by what?
Fruits
500
Petals and stamens fall away.
C