Unit 1 Lesson 3 Plant Reproduction

When a male structure and a female structure combine, it is called _____.

• circulation

• fertilization

• multiplying

• sprouting

The male part of a flower is called a(n) _____.

• pistil

• ovary

• stamen

• seed

Pine, fir, and spruce trees do not have flowers with pistils and stamens, so they reproduce using _____.

• spores and petals

• seeds that float on water

• seeds that have tiny hooks

• male cones and female cones

Answer explanation

Some seeds float on water away from parent plants because they _____.

• have wing-like structures

• have a hollow structure

• have hooks or barbs

• have fluffy parachutes

Answer explanation

What do seeds and spores have in common?

• They both are used by mosses to reproduce.

• They both are only transported by the wind.

• They both can eventually grow into new plants.

• They both grow on conifers before reproduction.

What causes these dandelion seeds to spread?

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Describe what structure allows the seeds to travel through the air.

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Why is it important for seeds to be able to scatter?

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The picture shows an adult plant and its offspring. How are they related to each other? Use evidence from the picture to make your claim.

• Adult plants make offspring with flowers.

• Adult and offspring plants are the same size.

• Adult and offspring plants have the same structures.

• Adult plants make offspring of the same king of plant.

Leo observes a bee on a flower as shown in the picture. He then observes the bee fly away and land on another flower. What happens when an insect lands on a flower? Base your claim on evidence from the picture.

• Insects are attracted to the seeds inside the fruit.

• Insects are attracted to the female parts of the flower.

• Some pollen on top of the pistil stick to the insect's body.

• Some pollen on top of the stamens stick to the insect's body.