Parts of a Flower
Flower Vocabulary
Plant Hormones
Plant Tropisms
Misc.
100
The _____________________ form a protective layer around the bud of a developing flower
Sepals
100
A bee lands on a plant, and leaves the pollen on the ________.
stigma
100
A ___________________ is a chemical signal produced by living organisms
Hormone
100
Plants react to environmental stimuli using growth responses called _____________________
Tropisms
100
a plant's response to the number of hours of darkness in its environment
photoperiodism
200
The _________________________ attract pollinators by their color or scent
petals
200
The pollen grain goes down the ____________ to fertilize in the ovary.
style
200
The plant hormone __________________ stimulates cell elongation, which can cause directional bending in shoots
auxins
200
Change in auxin concentration can cause sunflowers to grow towards a light source; this is an example of ______?
Phototropism
200
List one way in which humans use plants to survive:
Raw materials for homes, clothes, medicine, food for people and livestock
300
Name the flower structure labeled G
Stamen
300
The matured ovary of a flower develops into a thickened structure called a __________, which protects the seed.
Fruit
300
The plant hormone _____________________ increases cell division in plant cells.
Cytokinin
300
In ___________, the shoots of plants grow in the opposite direction of the pull of gravity.
Gravitropism
300
What two structures are shown in this picture?
ovary, ovule
400
Name the flower structure labeled E
Pistil
400
Unfertilized seed
ovule
400
Which plant hormone inhibits several of the other plant hormones?
Abscisic acid
400
What tropism is being shown in the following picture?
Thigmotropism
400
What two ways do animals help to pollinate/create new flowers?
by moving pollen from flower to flower & by eating and getting rid of the seeds
500
Name the flower structure labeled C
Style
500
Name the parts of a pistil.
stigma, style, ovary
500
The picture shown below is a result of the action of which plant hormone?
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Ethylene
500
What type of tropism is being depicted in the following picture?
Gravitropism
500
What type of seed dispersal (ex: wind, water, animal, etc.) is the following dry fruit best adapted for?
Animal