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17 Cards in this Set

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Compare and contrast sepals and petals.
Petals are the colorful, sometimes fragrant organs of the flower that attract pollinators and provide a surface for the pollinators to rest on while eating. Sepals sometimes resemble petals. They serve as a protective covering for the flowering bud.
Describe the male and female reproductive organs of a flower.
male- the stamen, which consists of the anther and filament; female- the pistil, which consists of a stigma, style, and ovary
Explain why walnut flowers are considered incomplete flowers.
Walnut flowers are incomplete because they do not have both pistils and stamens.
Discuss how photoperiodism influences flowering.
Flowering is controlled by photoperiodism. If the flowers don't have the right seasonal conditions, they won't grow.
Infer why a gardener's holly plant flowers every spring but never produces holly berries.
The plant has female flowers and there is no plant nearby with male flowers, or it has male flowers
In the middle of the summer a florist receives a large shipment of short-day plants. Infer what the florist must do to induce flowering.
The florist should cover the greenhouse with tarps each afternoon to shorten the day and lengthen the night.
Explain why the structure of a wind-pollinated flower is often different from that of an insect pollinated flower.
Wind-pollinated flowers are small and lack petals. Insect-pollinated flowers have brightly colored petals and nectar.
leaflike flower organs, usually brightly colored structures at the top of a flower stem.
petal
leaflike, usually green structures encircle the top of a flower stem below the petals.
sepals
male reproductive organ of a flower consisting of an anther and a filament.
stamen
pollen-producing structure located at the tip of a flower's stamen.
anther
female reproductive organ of a flower.
pistil
in plants, the bottom portion of a flowers's pistil that contains one or more ovules each containing one egg.
ovary
flowering plant response to differences in the length of day and night.
photoperiodism
a plant that is induced to flower when the number of daylight hours is shorter than its critical period.
short-day plant
plants that are induced to flower when the number of daylight hours is longer than its critical period.
long-day plant
plants that flower over a range in the number of daylight hours.
day-neutral plant