Plant Reproductive Structures - Middle School Life Science
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What is the main reproductive structure of most flowering plants (angiosperms)?
What is the main reproductive structure of most flowering plants (angiosperms)?
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The flower. Contains all reproductive organs including stamens and pistils.
The flower. Contains all reproductive organs including stamens and pistils.
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What is the function of petals in a flower’s reproduction?
What is the function of petals in a flower’s reproduction?
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Attract pollinators to help pollination occur. Bright colors and scents draw insects and birds for pollen transfer.
Attract pollinators to help pollination occur. Bright colors and scents draw insects and birds for pollen transfer.
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What is the function of sepals in a flower’s reproduction?
What is the function of sepals in a flower’s reproduction?
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Protect the flower bud before it opens. Green leaf-like structures shield developing flower parts.
Protect the flower bud before it opens. Green leaf-like structures shield developing flower parts.
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What is the anther and what does it produce?
What is the anther and what does it produce?
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Anther; it produces pollen. Pollen contains male gametes needed for fertilization.
Anther; it produces pollen. Pollen contains male gametes needed for fertilization.
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What is the filament in a flower’s stamen?
What is the filament in a flower’s stamen?
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The stalk that supports the anther. Positions anther for effective pollen dispersal.
The stalk that supports the anther. Positions anther for effective pollen dispersal.
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What is the pistil (carpel) in a flower?
What is the pistil (carpel) in a flower?
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The female reproductive part of a flower. Contains stigma, style, and ovary for receiving pollen and producing seeds.
The female reproductive part of a flower. Contains stigma, style, and ovary for receiving pollen and producing seeds.
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What is the stigma and what is its role in reproduction?
What is the stigma and what is its role in reproduction?
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Sticky tip that receives pollen. Its stickiness traps pollen grains for fertilization.
Sticky tip that receives pollen. Its stickiness traps pollen grains for fertilization.
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What is the style and what is its reproductive role?
What is the style and what is its reproductive role?
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Tube that pollen travels through to reach the ovary. Connects stigma to ovary for pollen tube growth.
Tube that pollen travels through to reach the ovary. Connects stigma to ovary for pollen tube growth.
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What is the ovary in a flower and what does it contain?
What is the ovary in a flower and what does it contain?
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Base of pistil; contains ovules. Ovules develop into seeds after fertilization.
Base of pistil; contains ovules. Ovules develop into seeds after fertilization.
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What is an ovule and what does it become after fertilization?
What is an ovule and what does it become after fertilization?
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Ovule; it becomes a seed. Contains female gamete that unites with sperm.
Ovule; it becomes a seed. Contains female gamete that unites with sperm.
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What is pollen and what does it contain?
What is pollen and what does it contain?
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Pollen; it contains male sex cells (sperm). Sperm cells fertilize the egg in the ovule.
Pollen; it contains male sex cells (sperm). Sperm cells fertilize the egg in the ovule.
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What is pollination in flowering plants?
What is pollination in flowering plants?
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Transfer of pollen from anther to stigma. First step before fertilization can occur.
Transfer of pollen from anther to stigma. First step before fertilization can occur.
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Identify the structure that develops into fruit after fertilization: ovary, anther, or stigma.
Identify the structure that develops into fruit after fertilization: ovary, anther, or stigma.
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Ovary. Mature ovary protects developing seeds.
Ovary. Mature ovary protects developing seeds.
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Which flower part directly supports the anther so pollen can be released: filament or style?
Which flower part directly supports the anther so pollen can be released: filament or style?
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Filament. Holds anther at proper height for pollen release.
Filament. Holds anther at proper height for pollen release.
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Identify the correct sequence for pollen’s path: stigma, style, ovary. Which order is correct?
Identify the correct sequence for pollen’s path: stigma, style, ovary. Which order is correct?
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Stigma → style → ovary. Pollen tube grows through this path to reach egg.
Stigma → style → ovary. Pollen tube grows through this path to reach egg.
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In seed plants, what is the main function of seeds in reproduction?
In seed plants, what is the main function of seeds in reproduction?
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Protect and disperse the plant embryo. Seeds contain embryo, food supply, and protective coat.
Protect and disperse the plant embryo. Seeds contain embryo, food supply, and protective coat.
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In non-flowering seed plants (gymnosperms), what structure produces seeds and pollen?
In non-flowering seed plants (gymnosperms), what structure produces seeds and pollen?
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Cones (male cones make pollen; female cones make seeds). Gymnosperms use cones instead of flowers for reproduction.
Cones (male cones make pollen; female cones make seeds). Gymnosperms use cones instead of flowers for reproduction.
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Which structure in conifers contains ovules and later bears seeds: male cone or female cone?
Which structure in conifers contains ovules and later bears seeds: male cone or female cone?
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Female cone. Larger, woody cones where seeds develop after pollination.
Female cone. Larger, woody cones where seeds develop after pollination.
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Identify the structure that contains spores and is often found on the underside of fern fronds.
Identify the structure that contains spores and is often found on the underside of fern fronds.
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Sorus (cluster of sporangia). Brown spots on fern leaves where spores develop and are released.
Sorus (cluster of sporangia). Brown spots on fern leaves where spores develop and are released.
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Which flower part contains the ovules and later becomes fruit after fertilization?
Which flower part contains the ovules and later becomes fruit after fertilization?
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Ovary. The swollen base of the pistil that protects developing seeds.
Ovary. The swollen base of the pistil that protects developing seeds.
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Identify the male reproductive part of a flower that produces pollen.
Identify the male reproductive part of a flower that produces pollen.
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Stamen. Male organ consisting of anther and filament.
Stamen. Male organ consisting of anther and filament.
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What is the stamen in a flower?
What is the stamen in a flower?
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The male reproductive part of a flower. Consists of anther and filament that produce and release pollen.
The male reproductive part of a flower. Consists of anther and filament that produce and release pollen.
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Which flower part produces pollen (the male gametes) in flowering plants?
Which flower part produces pollen (the male gametes) in flowering plants?
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Anther. The male reproductive part that produces and releases pollen grains.
Anther. The male reproductive part that produces and releases pollen grains.
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Identify the plant structure that develops from a fertilized ovule in flowering plants.
Identify the plant structure that develops from a fertilized ovule in flowering plants.
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Seed. Contains the embryo, food supply, and protective coat for dispersal.
Seed. Contains the embryo, food supply, and protective coat for dispersal.
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Which plant structure helps seed dispersal by wind, water, or animals in many species?
Which plant structure helps seed dispersal by wind, water, or animals in many species?
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Fruit. Evolved to protect seeds and enhance their dispersal range.
Fruit. Evolved to protect seeds and enhance their dispersal range.
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