Section 1
Seeds Transform Into New Plants Through Germination
Seeds sprout when conditions are right, beginning with the seed coat splitting open. A root emerges first, followed by a stem growing upward and leaves appearing, creating a new seedling.
In this Grade 4 lesson from Science: A Closer Look, Chapter 1, students learn how seed plants reproduce through key processes including pollination, fertilization, and germination, and explore how seeds are stored in flowers, fruits, and cones. Students also classify seed plants by comparing seed structures and discover the difference between flowering plants and conifers. A hands-on investigation tests whether seeds need water to germinate, reinforcing the concept of a plant's life cycle from seed to maturity.
Section 1
Seeds Transform Into New Plants Through Germination
Seeds sprout when conditions are right, beginning with the seed coat splitting open. A root emerges first, followed by a stem growing upward and leaves appearing, creating a new seedling.
Section 2
Flowers Use Pollination to Create Seeds
Pollinators like bees carry pollen from the male anther to the female pistil. This pollen travels down to the ovary where fertilization occurs, combining male and female cells to form seeds.
Section 3
Plants Pass Traits to Their Offspring
When plants reproduce, they transfer inherited traits like color, size, and shape to their offspring. These combined traits from two parent plants create seedlings that resemble but aren't identical to their parents.
Section 4
Plants Reproduce Without Using Seeds
Many plants create new offspring without seeds by growing runners along the ground, producing roots from stem cuttings placed in water, or developing from underground structures like bulbs and tubers.
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Section 1
Seeds Transform Into New Plants Through Germination
Seeds sprout when conditions are right, beginning with the seed coat splitting open. A root emerges first, followed by a stem growing upward and leaves appearing, creating a new seedling.
Section 2
Flowers Use Pollination to Create Seeds
Pollinators like bees carry pollen from the male anther to the female pistil. This pollen travels down to the ovary where fertilization occurs, combining male and female cells to form seeds.
Section 3
Plants Pass Traits to Their Offspring
When plants reproduce, they transfer inherited traits like color, size, and shape to their offspring. These combined traits from two parent plants create seedlings that resemble but aren't identical to their parents.
Section 4
Plants Reproduce Without Using Seeds
Many plants create new offspring without seeds by growing runners along the ground, producing roots from stem cuttings placed in water, or developing from underground structures like bulbs and tubers.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter